Sustainability Scan Report
Actionable Lighthouse + CO2.js findings mapped to WSG guidance.
- Scan title: SCAN: Spain
- Generated: 2026-03-30T00:54:54.410Z
- Scanned URLs: 100 / 100
- Estimated CO2: 87.3041 g
- Green page hosts: 0 / 100
- Average redundancy score: 68/100
- Average modularization score: 46/100
- Average dead-code score: 30/100
- Average non-critical resources score: 35/100
- Average form validation score: 70/100
- Average metadata score: 31/100
- Average layout adaptation score: 34/100
- Average lightweight security score: 32/100
- Average dependency maintenance score: 3/100
- Average expected-files score: 30/100
- Average compression score: 99/100
- Average optimization score: 100/100
- Average offline support score: 100/100
- Average language version score: 0/100
Download this report: Markdown report · JSON report
WSG Form Validation and Tooling
Assesses form error validation practices and tooling support while avoiding re-scans of repeated controls across pages.
- WSG criterion: Validate form errors and account for tooling requirements
- Average form validation score: 70/100 (0 low risk, 100 high risk)
- High urgency pages: 100
- Unique signatures assessed: 1
- Total occurrences: 100
- Reused assessments: 99
Recurring Form Elements
These signatures were assessed once and reused across pages to avoid duplicate scanning.
- text (q): 100 page(s), risk 70/100, urgency HIGH
WSG Metadata for Machine Readability
Checks page metadata against machine-readable best practices including canonical URL, social metadata, and structured data validity.
- WSG criterion: Structure metadata for machine readability
- Assessed pages: 100
- Average metadata score: 31/100 (0 low risk, 100 high risk)
- High urgency pages: 0
Cross-Page Metadata Gaps
- Missing html lang: 0
- Missing meta description: 7
- Missing canonical URL: 49
- Missing Open Graph core tags: 100
- Missing twitter:card: 100
- Invalid or missing JSON-LD: 0
WSG Multi-Device Layout Support
Assesses whether page layouts adapt cleanly on mobile and tablet viewports, with emphasis on overflow and touch target usability.
- WSG criterion: Ensure layouts work for different devices and requirements
- Assessed pages: 100
- Average layout adaptation score: 34/100 (0 low risk, 100 high risk)
- High urgency pages: 0
Cross-Page Layout Adaptation Signals
- Pages with mobile overflow: 0
- Pages with tablet overflow: 0
- Total small tap targets on mobile: 4172
- Total small tap targets on tablet: 7350
- Total fixed-width offenders: 217
WSG Lightweight Security Review
Non-invasive checks for common, easy-to-find security issues such as missing headers and vulnerable JavaScript library flags.
- WSG criterion: Ensure that your code is secure
- Assessed pages: 100
- Average lightweight security score: 32/100 (0 low risk, 100 high risk)
- High urgency pages: 0
Cross-Page Security Signals
- Pages missing Content-Security-Policy: 100
- HTTPS pages missing Strict-Transport-Security: 0
- Pages with vulnerable JS library findings: 0
- External scripts missing SRI (total): 125
WSG Dependency Maintenance Review
Shows where dependencies appear unmaintained using known vulnerable library signals and dependency integrity hints.
- WSG criterion: Use dependencies appropriately and ensure maintenance
- Assessed pages: 100
- Average dependency maintenance score: 3/100 (0 low risk, 100 high risk)
- High urgency pages: 0
Cross-Page Dependency Signals
- Pages with vulnerable dependencies: 0
- Total vulnerable dependency findings: 0
No recurring vulnerable dependency signatures were detected.
WSG Expected and Beneficial Files
Checks for common root-level files that improve crawlability, maintenance transparency, and operational clarity.
- WSG criterion: Include expected and beneficial files
- Assessed pages: 100
- Average expected-files score: 30/100 (0 low risk, 100 high risk)
- High urgency pages: 0
Cross-Page Expected File Gaps
- robots.txt missing: 0
- sitemap.xml missing: 0
- .well-known/security.txt missing: 100
- manifest.webmanifest missing: 100
- favicon.ico missing: 100
WSG Efficient Solution Optimization Opportunities
Highlights easy bloat-removal wins like oversized images, missing compression, and render-blocking resources.
- WSG criterion: Use the most efficient solution for your service
- Assessed pages: 100
- Average optimization score: 100/100 (0 low opportunity, 100 high opportunity)
- High urgency pages: 100
Cross-Page Optimization Signals
- Aggregate potential byte savings: 409.38 MB
- Aggregate render-blocking reduction potential: 911514 ms
Recurring Optimization Opportunities
- Enable text compression: 100 page(s), est. 124.20 MB total savings
- Remove unused CSS: 100 page(s), est. 114.13 MB total savings
- Minify CSS: 100 page(s), est. 85.06 MB total savings
- Remove unused JavaScript: 100 page(s), est. 51.15 MB total savings
- Serve images in next-gen formats: 100 page(s), est. 15.08 MB total savings
- Lazy-load offscreen images: 100 page(s), est. 10.10 MB total savings
- Minify JavaScript: 100 page(s), est. 6.08 MB total savings
- Compress oversized image assets: 100 page(s), est. 832.19 KB total savings
- Eliminate render-blocking resources: 100 page(s), est. 911514 ms unblock
- Right-size images for viewport: 94 page(s), est. 2.78 MB total savings
WSG Reduce Data Transfer With Compression
Highlights transfer reduction opportunities via text compression, media encoding, and compression-friendly asset preparation.
- WSG criterion: Reduce data transfer with compression
- Assessed pages: 100
- Average compression score: 99/100 (0 low risk, 100 high risk)
- High urgency pages: 99
Cross-Page Compression Signals
- Pages missing effective text compression: 100
- Aggregate potential compression savings: 231.24 MB
Recurring Compression Opportunities
- Enable Brotli/gzip for text assets: 100 page(s), est. 124.20 MB total savings, urgency HIGH
- Minify CSS before transfer: 100 page(s), est. 85.06 MB total savings, urgency HIGH
- Use modern image compression formats: 100 page(s), est. 15.08 MB total savings, urgency HIGH
- Minify JavaScript before transfer: 100 page(s), est. 6.08 MB total savings, urgency MEDIUM
- Improve image encoding quality/size: 100 page(s), est. 832.19 KB total savings, urgency LOW
WSG Offline Access and Caching Support
Evaluates support for offline use and web application behavior using service worker, offline routing, manifest, and cache policy signals.
- WSG criterion: Optimize caching and support offline access
- Assessed pages: 100
- Average offline support score: 100/100 (0 low risk, 100 high risk)
- High urgency pages: 100
Cross-Page Offline and Caching Signals
- Pages without service worker support: 100
- Pages without offline support: 100
- Pages with weak cache TTL signals: 100
Recurring Offline/Caching Opportunities
- Add service worker support: 100 page(s), urgency HIGH
- Ensure critical routes work offline: 100 page(s), urgency HIGH
- Improve web app manifest support: 100 page(s), urgency MEDIUM
- Strengthen static asset cache TTL: 100 page(s), urgency MEDIUM
- Support offline start URL behavior: 100 page(s), urgency MEDIUM
WSG Latest Stable Language Version
Flags externally visible runtime/language version drift and recurring opportunities to align with modern stable baselines.
- WSG criterion: Use the latest stable language version
- Assessed pages: 100
- Average language-version score: 0/100 (0 low risk, 100 high risk)
- High urgency pages: 0
Cross-Page Runtime/Language Version Signals
- Pages exposing runtime/language version signals: 0
- Pages with outdated runtime/language signals: 0
No recurring outdated runtime/language signatures were detected from exposed headers.
Green Hosting Checks
Hosting status for the submitted URL hosts and any external script or stylesheet origins, using the Green Web Foundation dataset.
- Dataset: Green Web Foundation
- Submitted URL hosts on green energy: 0 / 100
- Submitted URL hosts not confirmed green: 100
- Submitted URL hosts unknown: 0
- External CSS/JS origins on green energy: 3 / 5
- External CSS/JS origins not confirmed green: 2
- External CSS/JS origins unknown: 0
Third-Party JavaScript Assessment
Evaluates third-party script providers with the same priority as first-party code by combining payload, request volume, and hosting status.
- WSG criterion: Give third parties the same priority as first parties during assessment
- Average risk score: 33/100
- High urgency pages: 1
- Distinct providers: 4
Top Third-Party Script Providers
- www.googletagmanager.com: GREEN (Google Cloud); 100 page(s), 189 request(s), 26.15 MB
- egeovisor.redsara.es: NOT GREEN; 1 page(s), 41 request(s), 3.16 MB
- visitas-web.redsara.es: NOT GREEN; 1 page(s), 2 request(s), 43.73 KB
- www.google.com: GREEN (Google Cloud); 1 page(s), 1 request(s), 1012.00 B
Cross-Page Hosting Risk
Recurring external providers with non-green or unknown hosting status across the scanned URL set.
Non-green providers were detected, but none recur across multiple pages in this scan.
WSG Modularization Overview
Finds bandwidth-heavy components that should be split, deferred, or loaded only on demand.
- WSG criterion: Modularize bandwidth-heavy components
- Average modularization score: 46/100 (0 low, 100 high)
- High urgency pages: 100
Use this to identify candidates for route-level splitting, interaction-triggered imports, lazy media loading, and deferring heavy third-party or feature bundles.
WSG 3.2 Redundancy Overview
Checks unnecessary or redundant information using Lighthouse waste signals.
- WSG criterion: 3.2 Remove unnecessary or redundant information
- Average redundancy score: 68/100 (0 low, 100 high)
- High urgency pages: 100
Urgency is based on estimated redundant transfer and failed redundancy-related audits, helping teams prioritize fixes that reduce unnecessary bytes first.
WSG Remove Unnecessary Code Overview
Uses Lighthouse signals to estimate unused CSS/JS, duplicated JS, and unnecessary HTML complexity.
- WSG criterion: Remove unnecessary code
- Average dead-code score: 30/100 (0 low, 100 high)
- High urgency pages: 100
WSG Defer Non-Critical Resources Overview
Identifies assets likely not required for first paint and recommends deferring them.
- WSG criterion: Defer the loading of non-critical resources
- Average non-critical score: 35/100 (0 low, 100 high)
- High urgency pages: 100
WSG 3.1 Performance and Energy Budget
Benchmark comparison using Sustainable Web Design Digital Carbon Ratings.
- WSG criterion: 3.1 Set goals based on performance and energy impact
- Benchmark source: Sustainable Web Design ratings
- Current average transfer/page: 2.17 MB (rating E)
- Current average CO2/page: 0.8730 g (rating F)
- Recommended budget target: Rating B = max 975.85 KB and 0.1450 g per page
Reduction needed: Transfer 1.22 MB (56.2%), CO2 0.7280 g (83.4%).
Stretch target: Rating A = 531.15 KB and 0.0790 g per page.
Cross-Page Patterns
Recurring component and bundle opportunities that can often be fixed once in templates, CMS blocks, or the design system.
- This same heavy image pattern appears on 99 pages. Fix it once in the shared template, CMS block, or design system component to reduce load across the whole site.
- These 2 script bundles are recurring modularization targets. Move the fix to the shared bundle or component boundary so every affected page gets lighter at once.
- These 3 modularization targets recur across multiple pages. Centralize the fix at the component or bundle level instead of treating each page separately.
- Heavy assets from administracion.gob.es recur across 100 pages. Review whether that dependency should be deferred, optimized, or loaded conditionally.
Recurring Heavy Assets
- script assets from www.googletagmanager.com/gtag appears on 100 pages (26.15 MB total)
- stylesheet assets from administracion.gob.es/resources appears on 99 pages (115.28 MB total)
- image assets from administracion.gob.es/resources appears on 99 pages (15.09 MB total)
- script assets from administracion.gob.es/resources appears on 90 pages (22.18 MB total)
- image assets from administracion.gob.es/dam appears on 4 pages (2.31 MB total)
Recurring Modularization Targets
- Modularize heavy stylesheet asset from administracion.gob.es affects 100 pages (est. 112.27 MB aggregate savings)
- Split JavaScript by route or interaction affects 100 pages (est. 51.15 MB aggregate savings)
- Lazy-load offscreen images and media galleries affects 100 pages (est. 10.10 MB aggregate savings)
- Defer non-critical UI modules until after first render affects 100 pages
- Modularize heavy image asset from administracion.gob.es affects 99 pages (est. 16.38 MB aggregate savings)
Recurring Heavy Origins
- administracion.gob.es is a recurring heavy source on 100 pages (157.26 MB total)
- www.googletagmanager.com is a recurring heavy source on 100 pages (26.15 MB total)
Site-Wide Guidance
Shared recommendations grouped by site origin so platform-level fixes can be prioritized before page-by-page cleanup.
This scan appears to target a single site. Shared issues are usually best fixed once at template/platform level.
https://administracion.gob.es
Sampled pages: 100
- [LOW] Publish .well-known/security.txt
.well-known/security.txt is missing for all sampled pages on https://administracion.gob.es. - [HIGH] Apply Content-Security-Policy site-wide
CSP is absent across all sampled pages on https://administracion.gob.es. - [HIGH] Introduce service worker support
No sampled pages on https://administracion.gob.es indicate service worker support for offline resilience. - [HIGH] Support offline fallback behavior
Offline page behavior was not detected across sampled pages on https://administracion.gob.es. - [MEDIUM] Fix recurring optimization bloat at shared layer
Enable text compression recurs across 100 pages on https://administracion.gob.es (est. 124.20 MB aggregate savings). - [HIGH] Prioritize recurring compression fixes
Enable Brotli/gzip for text assets recurs across 100 pages on https://administracion.gob.es (est. 124.20 MB aggregate savings). - [HIGH] Prioritize recurring offline/caching improvements
Add service worker support is needed across 100 pages on https://administracion.gob.es.
Recurring compression opportunities:
- Enable Brotli/gzip for text assets: 100 page(s), est. 124.20 MB total savings, urgency HIGH
- Minify CSS before transfer: 100 page(s), est. 85.06 MB total savings, urgency HIGH
- Use modern image compression formats: 100 page(s), est. 15.08 MB total savings, urgency HIGH
- Minify JavaScript before transfer: 100 page(s), est. 6.08 MB total savings, urgency MEDIUM
- Improve image encoding quality/size: 100 page(s), est. 832.19 KB total savings, urgency LOW
Recurring offline/caching opportunities:
- Add service worker support: 100 page(s), urgency HIGH
- Ensure critical routes work offline: 100 page(s), urgency HIGH
- Improve web app manifest support: 100 page(s), urgency MEDIUM
- Strengthen static asset cache TTL: 100 page(s), urgency MEDIUM
- Support offline start URL behavior: 100 page(s), urgency MEDIUM
Recurring optimization opportunities:
- Enable text compression: 100 page(s), est. 124.20 MB total savings
- Remove unused CSS: 100 page(s), est. 114.13 MB total savings
- Minify CSS: 100 page(s), est. 85.06 MB total savings
- Remove unused JavaScript: 100 page(s), est. 51.15 MB total savings
- Serve images in next-gen formats: 100 page(s), est. 15.08 MB total savings
- Lazy-load offscreen images: 100 page(s), est. 10.10 MB total savings
Page-Specific Guidance
Page-level exceptions and targeted follow-ups after site-wide recommendations are addressed.
https://administracion.gob.es
- https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
Urgency: HIGH. Scores: compression 100/100, optimization 100/100, offline 100/100, dependency 4/100, language 0/100, security 33/100, expected files 30/100.
Top actions: Enable Brotli/gzip for text assets; Minify CSS before transfer; Use modern image compression formats - https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
Urgency: HIGH. Scores: compression 100/100, optimization 100/100, offline 100/100, dependency 4/100, language 0/100, security 33/100, expected files 30/100.
Top actions: Enable Brotli/gzip for text assets; Minify CSS before transfer; Use modern image compression formats - https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
Urgency: HIGH. Scores: compression 100/100, optimization 100/100, offline 100/100, dependency 4/100, language 0/100, security 33/100, expected files 30/100.
Top actions: Enable Brotli/gzip for text assets; Minify CSS before transfer; Use modern image compression formats - https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/conexion-servicios/telecomunicaciones
Urgency: HIGH. Scores: compression 100/100, optimization 100/100, offline 100/100, dependency 4/100, language 0/100, security 33/100, expected files 30/100.
Top actions: Enable Brotli/gzip for text assets; Minify CSS before transfer; Use modern image compression formats - https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/pasajeros/combinados-vinculados
Urgency: HIGH. Scores: compression 100/100, optimization 100/100, offline 100/100, dependency 4/100, language 0/100, security 33/100, expected files 30/100.
Top actions: Enable Brotli/gzip for text assets; Minify CSS before transfer; Use modern image compression formats - https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/fiscalidad/doble-imposicion
Urgency: HIGH. Scores: compression 100/100, optimization 100/100, offline 100/100, dependency 4/100, language 0/100, security 33/100, expected files 30/100.
Top actions: Enable Brotli/gzip for text assets; Minify CSS before transfer; Use modern image compression formats
Overview Table
Per-Page Green Hosting Details
Checks the submitted page host plus any external script and stylesheet origins discovered by Lighthouse.
https://administracion.gob.es/
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 1 request(s), 142.31 KB
https://administracion.gob.es/pag_Home
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 1 request(s), 142.06 KB
https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.23 KB
https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/estancia-TSE
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.69 KB
https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/numeros-urgencia
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.22 KB
https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.23 KB
https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/estancia-TSE
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.22 KB
https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/numeros-urgencia
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.23 KB
https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.23 KB
https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/estancia-TSE
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.42 KB
https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/numeros-urgencia
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.23 KB
https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/conexion-servicios/telecomunicaciones
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.23 KB
https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/vehiculos/permiso-conduccion/validez-canje-reconocimiento
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.23 KB
https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/empleados/seguridad-social/alta-empresario
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.23 KB
https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/vehiculos/seguro-obligatorio/accidente-que-hacer
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.23 KB
https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/conexion-servicios/telecomunicaciones
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.24 KB
https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/pasajeros/combinados-vinculados
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.25 KB
https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/vehiculos/compraventa
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.25 KB
https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/estancia-TSE
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.25 KB
https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/transporte-animales
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.24 KB
https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/residencia/estancia
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.25 KB
https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/fiscalidad/doble-imposicion
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.45 KB
https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/derechos/denominaciones-origen
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.24 KB
https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/conexion-servicios/gas
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.25 KB
https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/empresas/impuestos/especiales/electricidad
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.25 KB
https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/residencia/obtencion-residencia/inscribirte-residente
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.25 KB
https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/documentos/pasaportes-perdidos
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.25 KB
https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/seguridad-social-pensiones/Pensiones-clases-pasivas/coordinacion
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.25 KB
https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/pasajeros/tren-autobus
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 1 request(s), 141.96 KB
https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/fusion-venta/sector-farmaceutico
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.25 KB
https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/registro-cambio-cierre/sector-farmaceutico
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.25 KB
https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/empresas/contratacion-publica/participar-licitaciones/asistencia-informacion
Page host: administracion.gob.es: NOT GREEN
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud), 2 request(s), 283.24 KB
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Copy/Paste GitHub Issue Snippets
Use these blocks to open targeted implementation issues in your queue.
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
Largest Contentful Paint
Impact: high
Speed Index
Impact: high
Reduce unused JavaScript
Impact: high
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Reduce unused JavaScript
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Reduce unused JavaScript
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Largest Contentful Paint
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Reduce unused JavaScript
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Largest Contentful Paint
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Reduce unused JavaScript
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Largest Contentful Paint
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Reduce unused JavaScript
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Largest Contentful Paint
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Reduce unused JavaScript
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Largest Contentful Paint
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Speed Index
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Reduce unused JavaScript
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Largest Contentful Paint
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Speed Index
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Reduce unused JavaScript
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Largest Contentful Paint
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Speed Index
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Reduce unused JavaScript
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Largest Contentful Paint
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Reduce unused JavaScript
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Largest Contentful Paint
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Reduce unused JavaScript
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Largest Contentful Paint
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Reduce unused JavaScript
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Reduce unused JavaScript
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Reduce unused JavaScript
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Markdown Version
Show report markdown
# Sustainability Scan Report: SCAN: Spain
- Issue number: #1
- Generated at: 2026-03-30T00:54:54.410Z
- URLs requested: 100
- URLs scanned: 100
- Distinct sites scanned: 1
- Scan errors: 0
- Average performance score: 55/100
- Total transfer: 217.34 MB
- Estimated CO2: 87.3041 g
- Average transfer per page: 2.17 MB
- Average CO2 per page: 0.8730 g
- Average redundancy score: 68/100
- Pages with high redundancy urgency: 100
- Average modularization score: 46/100
- Pages with high modularization urgency: 100
- Average dead-code score: 30/100
- Pages with high dead-code urgency: 100
- Average non-critical resources score: 35/100
- Pages with high non-critical resource urgency: 100
- Average form validation score: 70/100
- Pages with high form validation urgency: 100
- Average metadata score: 31/100
- Pages with high metadata urgency: 0
- Average layout adaptation score: 34/100
- Pages with high layout urgency: 0
- Average lightweight security score: 32/100
- Pages with high security urgency: 0
- Average dependency maintenance score: 3/100
- Pages with high dependency maintenance urgency: 0
- Average expected-files score: 30/100
- Pages with high expected-files urgency: 0
- Average compression score: 99/100
- Pages with high compression urgency: 99
- Average optimization score: 100/100
- Pages with high optimization urgency: 100
- Average offline support score: 100/100
- Pages with high offline support urgency: 100
- Average language version score: 0/100
- Pages with high language version urgency: 0
## WSG Form Validation and Tooling
- WSG reference: Validate form errors and account for tooling requirements (https://www.w3.org/TR/web-sustainability-guidelines/#validate-form-errors-and-account-for-tooling-requirements)
- Unique form element signatures assessed: 1
- Total form element occurrences observed: 100
- Reused assessments (not re-scanned repeats): 99
### Recurring Form Elements (Assessed Once, Reused Across Pages)
- text (q): appears on 100 page(s), risk 70/100, urgency HIGH
## WSG Metadata for Machine Readability
- WSG reference: Structure metadata for machine readability (https://www.w3.org/TR/web-sustainability-guidelines/#structure-metadata-for-machine-readability)
- Assessed pages: 100
- Average metadata score: 31/100
- Pages with high urgency: 0
- Missing metadata across pages:
- Missing html lang: 0
- Missing meta description: 7
- Missing canonical URL: 49
- Missing Open Graph core tags: 100
- Missing twitter:card: 100
- Invalid or missing JSON-LD: 0
## WSG Multi-Device Layout Support
- WSG reference: Ensure layouts work for different devices and requirements (https://www.w3.org/TR/web-sustainability-guidelines/#ensure-layouts-work-for-different-devices-and-requirements)
- Assessed pages: 100
- Average layout adaptation score: 34/100
- High urgency pages: 0
- Pages with mobile overflow: 0
- Pages with tablet overflow: 0
- Total small tap targets on mobile: 4172
- Total small tap targets on tablet: 7350
- Total fixed-width offenders: 217
## WSG Lightweight Security Review
- WSG reference: Ensure that your code is secure (https://www.w3.org/TR/web-sustainability-guidelines/#ensure-that-your-code-is-secure)
- Assessed pages: 100
- Average lightweight security score: 32/100
- High urgency pages: 0
- Pages missing Content-Security-Policy: 100
- HTTPS pages missing Strict-Transport-Security: 0
- Pages with vulnerable JS library findings: 0
- External scripts missing SRI (total): 125
## WSG Dependency Maintenance Review
- WSG reference: Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- Assessed pages: 100
- Average dependency maintenance score: 3/100
- High urgency pages: 0
- Pages with vulnerable dependencies: 0
- Total vulnerable dependency findings: 0
## WSG Expected and Beneficial Files
- WSG reference: Include expected and beneficial files (https://www.w3.org/TR/web-sustainability-guidelines/#include-expected-and-beneficial-files)
- Assessed pages: 100
- Average expected-files score: 30/100
- High urgency pages: 0
- Missing files across pages:
- robots.txt missing: 0
- sitemap.xml missing: 0
- .well-known/security.txt missing: 100
- manifest.webmanifest missing: 100
- favicon.ico missing: 100
## WSG Reduce Data Transfer With Compression
- WSG reference: Reduce data transfer with compression (https://www.w3.org/TR/web-sustainability-guidelines/#reduce-data-transfer-with-compression)
- Assessed pages: 100
- Average compression score: 99/100
- High urgency pages: 99
- Pages missing effective text compression: 100
- Aggregate potential compression savings: 231.24 MB
- Recurring compression opportunities:
- Enable Brotli/gzip for text assets: appears on 100 page(s), est. 124.20 MB total savings, urgency HIGH
- Minify CSS before transfer: appears on 100 page(s), est. 85.06 MB total savings, urgency HIGH
- Use modern image compression formats: appears on 100 page(s), est. 15.08 MB total savings, urgency HIGH
- Minify JavaScript before transfer: appears on 100 page(s), est. 6.08 MB total savings, urgency MEDIUM
- Improve image encoding quality/size: appears on 100 page(s), est. 832.19 KB total savings, urgency LOW
## WSG Efficient Solution Optimization Opportunities
- WSG reference: Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- Assessed pages: 100
- Average optimization score: 100/100
- High urgency pages: 100
- Aggregate potential byte savings: 409.38 MB
- Aggregate render-blocking reduction potential: 911514 ms
- Recurring optimization opportunities:
- Enable text compression: appears on 100 page(s), est. 124.20 MB total savings
- Remove unused CSS: appears on 100 page(s), est. 114.13 MB total savings
- Minify CSS: appears on 100 page(s), est. 85.06 MB total savings
- Remove unused JavaScript: appears on 100 page(s), est. 51.15 MB total savings
- Serve images in next-gen formats: appears on 100 page(s), est. 15.08 MB total savings
- Lazy-load offscreen images: appears on 100 page(s), est. 10.10 MB total savings
- Minify JavaScript: appears on 100 page(s), est. 6.08 MB total savings
- Compress oversized image assets: appears on 100 page(s), est. 832.19 KB total savings
- Eliminate render-blocking resources: appears on 100 page(s), est. 911514 ms unblock
- Right-size images for viewport: appears on 94 page(s), est. 2.78 MB total savings
## WSG Offline Access and Caching Support
- WSG reference: Optimize caching and support offline access (https://www.w3.org/TR/web-sustainability-guidelines/#optimize-caching-and-support-offline-access)
- Assessed pages: 100
- Average offline support score: 100/100
- High urgency pages: 100
- Pages without service worker support: 100
- Pages without offline support: 100
- Pages with weak cache TTL signals: 100
- Recurring offline/caching opportunities:
- Add service worker support: appears on 100 page(s), urgency HIGH
- Ensure critical routes work offline: appears on 100 page(s), urgency HIGH
- Improve web app manifest support: appears on 100 page(s), urgency MEDIUM
- Strengthen static asset cache TTL: appears on 100 page(s), urgency MEDIUM
- Support offline start URL behavior: appears on 100 page(s), urgency MEDIUM
## WSG Latest Stable Language Version
- WSG reference: Use the latest stable language version (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-latest-stable-language-version)
- Assessed pages: 100
- Average language-version score: 0/100
- High urgency pages: 0
- Pages exposing runtime/language version signals: 0
- Pages with outdated runtime/language signals: 0
## WSG Third-Party JavaScript Assessment
- WSG reference: Give third parties the same priority as first parties during assessment (https://www.w3.org/TR/web-sustainability-guidelines/#give-third-parties-the-same-priority-as-first-parties-during-assessment)
- Average third-party JS risk score: 33/100
- Pages with high urgency: 1
- Distinct third-party script providers: 4
### Top Third-Party Script Providers
- www.googletagmanager.com: GREEN (Google Cloud); on 100 page(s), 189 request(s), 26.15 MB
- egeovisor.redsara.es: NOT GREEN; on 1 page(s), 41 request(s), 3.16 MB
- visitas-web.redsara.es: NOT GREEN; on 1 page(s), 2 request(s), 43.73 KB
- www.google.com: GREEN (Google Cloud); on 1 page(s), 1 request(s), 1012.00 B
## Cross-Page Hosting Risk (Non-Green Providers)
- Focus: recurring external CSS/JS providers with non-green or unknown hosting status.
- Non-green providers were found, but none recur across multiple pages in this scan.
## Green Hosting Checks
- Source: https://www.thegreenwebfoundation.org/tools/green-web-dataset/
- Submitted URL hosts checked: 100
- Submitted URL hosts on green energy: 0
- Submitted URL hosts not confirmed green: 100
- Submitted URL hosts unknown: 0
- External CSS/JS origins checked: 5
- External CSS/JS origins on green energy: 3
- External CSS/JS origins not confirmed green: 2
- External CSS/JS origins unknown: 0
## WSG SC 3.1 Budget Guidance
- WSG reference: Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- Sustainable Web Design benchmark: https://sustainablewebdesign.org/digital-carbon-ratings/
- Current transfer rating: E
- Current CO2 rating: F
- Recommended budget target: rating B
- Budget max transfer/page: 975.85 KB
- Budget max CO2/page: 0.1450 g
- Transfer reduction needed: 1.22 MB (56.2%)
- CO2 reduction needed: 0.7280 g (83.4%)
- Stretch budget (rating A): 531.15 KB and 0.0790 g per page
## WSG SC 3.2 Redundancy Analysis
- WSG reference: Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- Redundancy score: 0 (low redundancy) to 100 (high redundancy)
- Urgency levels: low, medium, high
## WSG Remove Unnecessary Code Analysis
- WSG reference: Remove unnecessary code (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-code)
- Dead-code score: 0 (low unnecessary code) to 100 (high unnecessary code)
- Includes unused CSS/JS, duplicated JS, and HTML complexity heuristics
## WSG Defer Non-Critical Resources Analysis
- WSG reference: Defer the loading of non-critical resources (https://www.w3.org/TR/web-sustainability-guidelines/#defer-the-loading-of-non-critical-resources)
- Non-critical score: 0 (few defer opportunities) to 100 (many deferrable resources)
- Uses offscreen image savings, unused CSS/JS, render-blocking delay, and heavy likely-non-critical assets
## WSG Modularization Analysis
- WSG reference: Modularize bandwidth-heavy components (https://www.w3.org/TR/web-sustainability-guidelines/#modularize-bandwidth-heavy-components)
- Modularization score: 0 (few obvious on-demand opportunities) to 100 (many heavy initial-load components)
- This analysis looks for heavy scripts, images, styles, fonts, and media that should be split or loaded on demand.
## Cross-Page Patterns
- This same heavy image pattern appears on 99 pages. Fix it once in the shared template, CMS block, or design system component to reduce load across the whole site.
- These 2 script bundles are recurring modularization targets. Move the fix to the shared bundle or component boundary so every affected page gets lighter at once.
- These 3 modularization targets recur across multiple pages. Centralize the fix at the component or bundle level instead of treating each page separately.
- Heavy assets from administracion.gob.es recur across 100 pages. Review whether that dependency should be deferred, optimized, or loaded conditionally.
### Recurring Heavy Assets
- script assets from www.googletagmanager.com/gtag appears on 100 pages (26.15 MB total)
- stylesheet assets from administracion.gob.es/resources appears on 99 pages (115.28 MB total)
- image assets from administracion.gob.es/resources appears on 99 pages (15.09 MB total)
- script assets from administracion.gob.es/resources appears on 90 pages (22.18 MB total)
- image assets from administracion.gob.es/dam appears on 4 pages (2.31 MB total)
### Recurring Modularization Targets
- Modularize heavy stylesheet asset from administracion.gob.es affects 100 pages (est. 112.27 MB aggregate savings)
- Split JavaScript by route or interaction affects 100 pages (est. 51.15 MB aggregate savings)
- Lazy-load offscreen images and media galleries affects 100 pages (est. 10.10 MB aggregate savings)
- Defer non-critical UI modules until after first render affects 100 pages
- Modularize heavy image asset from administracion.gob.es affects 99 pages (est. 16.38 MB aggregate savings)
### Recurring Heavy Origins
- administracion.gob.es is a recurring heavy source on 100 pages (157.26 MB total)
- www.googletagmanager.com is a recurring heavy source on 100 pages (26.15 MB total)
## Site-Wide Guidance
- This scan appears to target a single site. Shared recommendations below should typically be fixed once at platform/template level.
### https://administracion.gob.es
- Sampled pages: 100
- Shared recommendations:
- [LOW] Publish .well-known/security.txt
- .well-known/security.txt is missing for all sampled pages on https://administracion.gob.es.
- [HIGH] Apply Content-Security-Policy site-wide
- CSP is absent across all sampled pages on https://administracion.gob.es.
- [HIGH] Introduce service worker support
- No sampled pages on https://administracion.gob.es indicate service worker support for offline resilience.
- [HIGH] Support offline fallback behavior
- Offline page behavior was not detected across sampled pages on https://administracion.gob.es.
- [MEDIUM] Fix recurring optimization bloat at shared layer
- Enable text compression recurs across 100 pages on https://administracion.gob.es (est. 124.20 MB aggregate savings).
- [HIGH] Prioritize recurring compression fixes
- Enable Brotli/gzip for text assets recurs across 100 pages on https://administracion.gob.es (est. 124.20 MB aggregate savings).
- [HIGH] Prioritize recurring offline/caching improvements
- Add service worker support is needed across 100 pages on https://administracion.gob.es.
- Recurring offline/caching opportunities:
- Add service worker support: 100 page(s), urgency HIGH
- Ensure critical routes work offline: 100 page(s), urgency HIGH
- Improve web app manifest support: 100 page(s), urgency MEDIUM
- Strengthen static asset cache TTL: 100 page(s), urgency MEDIUM
- Support offline start URL behavior: 100 page(s), urgency MEDIUM
- Recurring compression opportunities:
- Enable Brotli/gzip for text assets: 100 page(s), est. 124.20 MB total savings, urgency HIGH
- Minify CSS before transfer: 100 page(s), est. 85.06 MB total savings, urgency HIGH
- Use modern image compression formats: 100 page(s), est. 15.08 MB total savings, urgency HIGH
- Minify JavaScript before transfer: 100 page(s), est. 6.08 MB total savings, urgency MEDIUM
- Improve image encoding quality/size: 100 page(s), est. 832.19 KB total savings, urgency LOW
- Recurring optimization opportunities:
- Enable text compression: 100 page(s), est. 124.20 MB total savings
- Remove unused CSS: 100 page(s), est. 114.13 MB total savings
- Minify CSS: 100 page(s), est. 85.06 MB total savings
- Remove unused JavaScript: 100 page(s), est. 51.15 MB total savings
- Serve images in next-gen formats: 100 page(s), est. 15.08 MB total savings
- Lazy-load offscreen images: 100 page(s), est. 10.10 MB total savings
## Page-Specific Guidance
- Use this section for page-level exceptions after site-wide/platform fixes are planned.
### https://administracion.gob.es
- https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
- Combined urgency: HIGH
- Compression score: 100/100, optimization score: 100/100, offline score: 100/100, dependency score: 4/100, language score: 0/100, security score: 33/100, expected-files score: 30/100
- [HIGH] Enable Brotli/gzip for text assets
- [HIGH] Minify CSS before transfer
- [MEDIUM] Use modern image compression formats
- https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
- Combined urgency: HIGH
- Compression score: 100/100, optimization score: 100/100, offline score: 100/100, dependency score: 4/100, language score: 0/100, security score: 33/100, expected-files score: 30/100
- [HIGH] Enable Brotli/gzip for text assets
- [HIGH] Minify CSS before transfer
- [MEDIUM] Use modern image compression formats
- https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
- Combined urgency: HIGH
- Compression score: 100/100, optimization score: 100/100, offline score: 100/100, dependency score: 4/100, language score: 0/100, security score: 33/100, expected-files score: 30/100
- [HIGH] Enable Brotli/gzip for text assets
- [HIGH] Minify CSS before transfer
- [MEDIUM] Use modern image compression formats
- https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/conexion-servicios/telecomunicaciones
- Combined urgency: HIGH
- Compression score: 100/100, optimization score: 100/100, offline score: 100/100, dependency score: 4/100, language score: 0/100, security score: 33/100, expected-files score: 30/100
- [HIGH] Enable Brotli/gzip for text assets
- [HIGH] Minify CSS before transfer
- [MEDIUM] Use modern image compression formats
- https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/pasajeros/combinados-vinculados
- Combined urgency: HIGH
- Compression score: 100/100, optimization score: 100/100, offline score: 100/100, dependency score: 4/100, language score: 0/100, security score: 33/100, expected-files score: 30/100
- [HIGH] Enable Brotli/gzip for text assets
- [HIGH] Minify CSS before transfer
- [MEDIUM] Use modern image compression formats
- https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/fiscalidad/doble-imposicion
- Combined urgency: HIGH
- Compression score: 100/100, optimization score: 100/100, offline score: 100/100, dependency score: 4/100, language score: 0/100, security score: 33/100, expected-files score: 30/100
- [HIGH] Enable Brotli/gzip for text assets
- [HIGH] Minify CSS before transfer
- [MEDIUM] Use modern image compression formats
## Priority Improvements
### https://administracion.gob.es/
- Performance: 55/100
- Transfer: 3.30 MB
- CO2 estimate: 1.3264 g
- Page host green energy status: NOT GREEN
- Redundancy score: 61/100
- Redundancy urgency: HIGH
- Modularization score: 42/100
- Modularization urgency: HIGH
- Dead-code score: 20/100
- Dead-code urgency: HIGH
- Non-critical resources score: 27/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 91/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 17/100
- Third-party JS urgency: LOW
- Estimated redundant transfer: 1.54 MB (46.5% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.13 MB savings)
- [HIGH] Reduce unused javascript (est. 411.67 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.39 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 9 (2.45 MB total)
- On-demand modularization candidates:
- [HIGH] Lazy-load offscreen images and media galleries (est. 185.18 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 411.67 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 1 request(s), 142.31 KB
- Third-party JS recommendations:
- [LOW] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.13 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 411.67 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 185.18 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 411.67 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.13 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 10075 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 72 small targets on mobile and 120 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.39 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [HIGH] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 688.02 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 29.76 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.39 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.13 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 688.02 KB.
- [HIGH] Right-size images for viewport
- Avoid sending larger images than the rendered size needs. Estimated byte savings: 476.77 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 411.67 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 3.14 MB).
- [HIGH] Largest Contentful Paint
- Current value: 17.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 412 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,162 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Serve images in next-gen formats
- Current value: Est savings of 688 KiB
- WSG: 11 Optimize media to reduce resource use (https://www.w3.org/TR/web-sustainability-guidelines/#optimize-media-to-reduce-resource-use)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 10,080 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
### https://administracion.gob.es/pag_Home
- Performance: 55/100
- Transfer: 3.30 MB
- CO2 estimate: 1.3260 g
- Page host green energy status: NOT GREEN
- Redundancy score: 61/100
- Redundancy urgency: HIGH
- Modularization score: 43/100
- Modularization urgency: HIGH
- Dead-code score: 20/100
- Dead-code urgency: HIGH
- Non-critical resources score: 28/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 91/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 17/100
- Third-party JS urgency: LOW
- Estimated redundant transfer: 1.54 MB (46.6% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.13 MB savings)
- [HIGH] Reduce unused javascript (est. 412.95 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.39 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 9 (2.45 MB total)
- On-demand modularization candidates:
- [HIGH] Lazy-load offscreen images and media galleries (est. 228.80 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 412.95 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 1 request(s), 142.06 KB
- Third-party JS recommendations:
- [LOW] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.13 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 412.95 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 228.80 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 412.95 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.13 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9815 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 72 small targets on mobile and 120 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.39 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [HIGH] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 688.02 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 29.76 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.39 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.13 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 688.02 KB.
- [HIGH] Right-size images for viewport
- Avoid sending larger images than the rendered size needs. Estimated byte savings: 476.77 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 412.95 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 3.14 MB).
- [HIGH] Largest Contentful Paint
- Current value: 14.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 413 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,162 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Serve images in next-gen formats
- Current value: Est savings of 688 KiB
- WSG: 11 Optimize media to reduce resource use (https://www.w3.org/TR/web-sustainability-guidelines/#optimize-media-to-reduce-resource-use)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,820 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
- Performance: 56/100
- Transfer: 1.87 MB
- CO2 estimate: 0.7526 g
- Page host green energy status: NOT GREEN
- Redundancy score: 81/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 36/100
- Dead-code urgency: HIGH
- Non-critical resources score: 37/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (87.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 518.55 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.06 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 5 (1.59 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 116.90 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 518.55 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.23 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 518.55 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 116.90 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 518.55 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 7727 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 55 small targets on mobile and 85 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.06 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.06 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 518.55 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 7727 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.57 MB).
- [HIGH] Largest Contentful Paint
- Current value: 10.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 9.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 519 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 7,730 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,082 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/estancia-TSE
- Performance: 55/100
- Transfer: 1.84 MB
- CO2 estimate: 0.7408 g
- Page host green energy status: NOT GREEN
- Redundancy score: 72/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 34/100
- Dead-code urgency: HIGH
- Non-critical resources score: 38/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (90.1% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.47 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.06 MB savings)
- Heavy initial-load requests: 5 (1.59 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 100.47 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.47 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.69 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.47 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 100.47 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.47 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 7973 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 38 small targets on mobile and 69 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.06 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.06 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.47 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 7973 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.55 MB).
- [HIGH] Largest Contentful Paint
- Current value: 10.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 7,970 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,082 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/numeros-urgencia
- Performance: 55/100
- Transfer: 1.88 MB
- CO2 estimate: 0.7542 g
- Page host green energy status: NOT GREEN
- Redundancy score: 71/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 34/100
- Dead-code urgency: HIGH
- Non-critical resources score: 38/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (88.5% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.06 MB savings)
- Heavy initial-load requests: 5 (1.59 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 126.06 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.22 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 126.06 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 7742 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 47 small targets on mobile and 81 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.06 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.06 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 7742 ms.
- [MEDIUM] Lazy-load offscreen images
- Defer below-the-fold imagery until it is likely to be viewed. Estimated byte savings: 126.06 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.58 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 7,740 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,082 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
- Performance: 55/100
- Transfer: 1.87 MB
- CO2 estimate: 0.7525 g
- Page host green energy status: NOT GREEN
- Redundancy score: 81/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 36/100
- Dead-code urgency: HIGH
- Non-critical resources score: 37/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (87.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 518.06 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.06 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 5 (1.59 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 116.90 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 518.06 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.23 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 518.06 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 116.90 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 518.06 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 7778 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 55 small targets on mobile and 85 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.06 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.06 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 518.06 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 7778 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.57 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 518 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 7,780 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,082 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/estancia-TSE
- Performance: 56/100
- Transfer: 1.84 MB
- CO2 estimate: 0.7406 g
- Page host green energy status: NOT GREEN
- Redundancy score: 72/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 34/100
- Dead-code urgency: HIGH
- Non-critical resources score: 38/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (90.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.42 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.06 MB savings)
- Heavy initial-load requests: 5 (1.59 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 100.47 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.42 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.22 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.42 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 100.47 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.42 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8062 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 38 small targets on mobile and 69 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.06 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.06 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.42 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8062 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.55 MB).
- [HIGH] Largest Contentful Paint
- Current value: 10.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,060 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,082 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/numeros-urgencia
- Performance: 55/100
- Transfer: 2.12 MB
- CO2 estimate: 0.8517 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.4% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.23 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 126.06 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.23 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 126.06 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8919 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 47 small targets on mobile and 81 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.23 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.23 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8919 ms.
- [MEDIUM] Lazy-load offscreen images
- Defer below-the-fold imagery until it is likely to be viewed. Estimated byte savings: 126.06 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.82 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,920 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,263 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/centros-atencion-sociosanitaria
- Performance: 55/100
- Transfer: 1.87 MB
- CO2 estimate: 0.7523 g
- Page host green energy status: NOT GREEN
- Redundancy score: 81/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 36/100
- Dead-code urgency: HIGH
- Non-critical resources score: 37/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 36/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (87.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 518.06 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.06 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 5 (1.59 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 116.90 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 518.06 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.23 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 518.06 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 116.90 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 518.06 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 7757 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 58 small targets on mobile and 83 on tablet.
- [MEDIUM] Refactor fixed-width components
- 3 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.06 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.06 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 518.06 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 7757 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.57 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 15.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 518 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 7,760 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,082 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/estancia-TSE
- Performance: 56/100
- Transfer: 1.84 MB
- CO2 estimate: 0.7406 g
- Page host green energy status: NOT GREEN
- Redundancy score: 72/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 34/100
- Dead-code urgency: HIGH
- Non-critical resources score: 38/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (90.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.56 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.06 MB savings)
- Heavy initial-load requests: 5 (1.59 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 100.47 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.56 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.42 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.56 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 100.47 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.56 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8063 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 40 small targets on mobile and 66 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.06 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.06 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.56 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8063 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.55 MB).
- [HIGH] Largest Contentful Paint
- Current value: 10.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 9.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,060 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,082 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/numeros-urgencia
- Performance: 55/100
- Transfer: 2.12 MB
- CO2 estimate: 0.8515 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.4% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.23 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 126.06 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.23 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 126.06 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9193 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 50 small targets on mobile and 78 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.23 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.23 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9193 ms.
- [MEDIUM] Lazy-load offscreen images
- Defer below-the-fold imagery until it is likely to be viewed. Estimated byte savings: 126.06 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.82 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,190 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,263 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/conexion-servicios/telecomunicaciones
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8389 g
- Page host green energy status: NOT GREEN
- Redundancy score: 79/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 33/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.5% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.10 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.23 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 102.47 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.10 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.23 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.10 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 102.47 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.10 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8958 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 76 small targets on mobile and 105 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.23 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.23 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.10 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8958 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 532 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,960 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,263 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/vehiculos/permiso-conduccion/validez-canje-reconocimiento
- Performance: 55/100
- Transfer: 1.82 MB
- CO2 estimate: 0.7331 g
- Page host green energy status: NOT GREEN
- Redundancy score: 72/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 34/100
- Dead-code urgency: HIGH
- Non-critical resources score: 38/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (90.4% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 519.41 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.06 MB savings)
- Heavy initial-load requests: 5 (1.59 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 519.41 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.23 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 519.41 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 519.41 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8056 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 26 small targets on mobile and 58 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.06 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.06 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 519.41 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8056 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.53 MB).
- [HIGH] Largest Contentful Paint
- Current value: 10.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 519 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,060 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,082 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/empleados/seguridad-social/alta-empresario
- Performance: 56/100
- Transfer: 2.07 MB
- CO2 estimate: 0.8303 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 31/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 40/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (80.5% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.52 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.23 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.52 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.23 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.52 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.52 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9299 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 42 small targets on mobile and 67 on tablet.
- [MEDIUM] Refactor fixed-width components
- 5 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.23 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.23 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.52 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9299 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.77 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,300 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,263 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/vehiculos/seguro-obligatorio/accidente-que-hacer
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8386 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.6% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.69 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.69 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.23 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.69 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.69 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9276 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 28 small targets on mobile and 61 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.69 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9276 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,280 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/conexion-servicios/telecomunicaciones
- Performance: 55/100
- Transfer: 2.11 MB
- CO2 estimate: 0.8474 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 44/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.89 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 102.47 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.89 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.24 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.89 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 102.47 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.89 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9247 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 75 small targets on mobile and 108 on tablet.
- [MEDIUM] Refactor fixed-width components
- 7 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.89 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9247 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,250 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/pasajeros/combinados-vinculados
- Performance: 55/100
- Transfer: 2.10 MB
- CO2 estimate: 0.8431 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 40/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.42 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 94.36 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.42 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.42 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 94.36 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.42 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9299 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 45 small targets on mobile and 73 on tablet.
- [MEDIUM] Refactor fixed-width components
- 5 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.42 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9299 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 14.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,300 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/vehiculos/compraventa
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8396 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (78.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 518.54 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 518.54 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 518.54 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 518.54 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9251 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 30 small targets on mobile and 60 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 518.54 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9251 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 519 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,169 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,250 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/asistencia-sanitaria/estancia-TSE
- Performance: 55/100
- Transfer: 2.10 MB
- CO2 estimate: 0.8431 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.59 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 100.47 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.59 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.59 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 100.47 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.59 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9331 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 38 small targets on mobile and 69 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.59 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9331 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,330 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,277 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/transporte-animales
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8411 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.4% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 91.14 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.24 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 91.14 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9230 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 36 small targets on mobile and 69 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9230 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,230 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/residencia/estancia
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8376 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.67 MB (79.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.52 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 73.65 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.52 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.52 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 73.65 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.52 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9053 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 25 small targets on mobile and 52 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.52 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9053 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 14.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,050 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/fiscalidad/doble-imposicion
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8383 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.65 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.65 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.45 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.65 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.65 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9232 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 32 small targets on mobile and 64 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.65 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9232 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,230 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/derechos/denominaciones-origen
- Performance: 55/100
- Transfer: 2.19 MB
- CO2 estimate: 0.8787 g
- Page host green energy status: NOT GREEN
- Redundancy score: 64/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 29/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (75.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 531.72 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [HIGH] Lazy-load offscreen images and media galleries (est. 168.17 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 531.72 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.24 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 531.72 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 168.17 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 531.72 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9257 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 52 small targets on mobile and 85 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 158.13 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 531.72 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9257 ms.
- [MEDIUM] Lazy-load offscreen images
- Defer below-the-fold imagery until it is likely to be viewed. Estimated byte savings: 168.17 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.89 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 15.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 532 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,260 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,284 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/conexion-servicios/gas
- Performance: 56/100
- Transfer: 2.11 MB
- CO2 estimate: 0.8479 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 102.52 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 102.52 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9242 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 51 small targets on mobile and 82 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9242 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,240 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/empresas/impuestos/especiales/electricidad
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8381 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.99 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.99 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.99 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.99 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8933 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 33 small targets on mobile and 66 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.99 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8933 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,930 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/residencia/obtencion-residencia/inscribirte-residente
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8394 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.6% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.69 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.69 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.69 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.69 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9239 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 33 small targets on mobile and 62 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.69 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9239 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,240 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,284 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/documentos/pasaportes-perdidos
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8393 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 42/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (78.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 519.31 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 519.31 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 519.31 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 519.31 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9267 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 31 small targets on mobile and 60 on tablet.
- [MEDIUM] Refactor fixed-width components
- 6 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 519.31 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9267 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 519 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,270 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/seguridad-social-pensiones/Pensiones-clases-pasivas/coordinacion
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8379 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.52 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.52 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.52 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.52 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8950 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 31 small targets on mobile and 63 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.52 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8950 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 14.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,950 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/pasajeros/tren-autobus
- Performance: 55/100
- Transfer: 1.93 MB
- CO2 estimate: 0.7754 g
- Page host green energy status: NOT GREEN
- Redundancy score: 71/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 32/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 45/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 26/100
- Layout adaptation urgency: LOW
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 17/100
- Third-party JS urgency: LOW
- Estimated redundant transfer: 1.61 MB (83.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.15 MB savings)
- [HIGH] Reduce unused javascript (est. 470.57 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 5 (1.70 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 73.65 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 470.57 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 1 request(s), 141.96 KB
- Third-party JS recommendations:
- [LOW] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.15 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 470.57 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 73.65 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 470.57 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.15 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9167 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Add meta description
- Provide a concise description to improve machine interpretation and preview quality.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [MEDIUM] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 9 small targets on mobile and 41 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.15 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 470.57 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9167 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.78 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 471 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,174 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,170 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/fusion-venta/sector-farmaceutico
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8383 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 40/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.6% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.16 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.16 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.16 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.16 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9457 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 37 small targets on mobile and 75 on tablet.
- [MEDIUM] Refactor fixed-width components
- 5 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.16 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9457 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 532 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,460 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/registro-cambio-cierre/sector-farmaceutico
- Performance: 56/100
- Transfer: 2.12 MB
- CO2 estimate: 0.8500 g
- Page host green energy status: NOT GREEN
- Redundancy score: 75/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 32/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (77.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 519.89 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 105.05 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 519.89 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 519.89 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 105.05 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 519.89 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8909 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 54 small targets on mobile and 89 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 519.89 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8909 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.82 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 520 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,910 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/empresas/contratacion-publica/participar-licitaciones/asistencia-informacion
- Performance: 56/100
- Transfer: 1.83 MB
- CO2 estimate: 0.7350 g
- Page host green energy status: NOT GREEN
- Redundancy score: 72/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 35/100
- Dead-code urgency: HIGH
- Non-critical resources score: 38/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (90.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.04 MB savings)
- Heavy initial-load requests: 5 (1.59 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 98.91 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.24 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 98.91 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 7701 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 44 small targets on mobile and 70 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.04 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.04 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 7701 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.54 MB).
- [HIGH] Largest Contentful Paint
- Current value: 9.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 9.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 7,700 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,065 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/empresas/productos/defectuosos-seguridad
- Performance: 56/100
- Transfer: 2.13 MB
- CO2 estimate: 0.8541 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.1% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.55 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 114.20 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.55 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.55 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 114.20 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.55 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9126 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 41 small targets on mobile and 72 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.55 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9126 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.83 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,130 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/index.html
- Performance: 55/100
- Transfer: 3.10 MB
- CO2 estimate: 1.2461 g
- Page host green energy status: NOT GREEN
- Redundancy score: 60/100
- Redundancy urgency: HIGH
- Modularization score: 40/100
- Modularization urgency: HIGH
- Dead-code score: 21/100
- Dead-code urgency: HIGH
- Non-critical resources score: 29/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 92/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 17/100
- Third-party JS urgency: LOW
- Estimated redundant transfer: 1.54 MB (49.5% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.13 MB savings)
- [HIGH] Reduce unused javascript (est. 411.49 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 7 (2.28 MB total)
- On-demand modularization candidates:
- [HIGH] Lazy-load offscreen images and media galleries (est. 241.58 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 411.49 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 1 request(s), 141.96 KB
- Third-party JS recommendations:
- [LOW] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.13 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 411.49 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 241.58 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 411.49 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.13 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8879 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 72 small targets on mobile and 120 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [HIGH] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 688.02 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 29.76 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.13 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 688.02 KB.
- [HIGH] Right-size images for viewport
- Avoid sending larger images than the rendered size needs. Estimated byte savings: 476.77 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 411.49 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 2.95 MB).
- [HIGH] Largest Contentful Paint
- Current value: 17.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 411 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,162 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Serve images in next-gen formats
- Current value: Est savings of 688 KiB
- WSG: 11 Optimize media to reduce resource use (https://www.w3.org/TR/web-sustainability-guidelines/#optimize-media-to-reduce-resource-use)
- [HIGH] Defer offscreen images
- Current value: Est savings of 242 KiB
- WSG: 3 Modularize bandwidth-heavy components (https://www.w3.org/TR/web-sustainability-guidelines/#modularize-bandwidth-heavy-components)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/incorporacion
- Performance: 56/100
- Transfer: 2.15 MB
- CO2 estimate: 0.8637 g
- Page host green energy status: NOT GREEN
- Redundancy score: 65/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 29/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (77.3% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.50 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 118.23 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.50 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.50 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 118.23 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.50 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8925 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 51 small targets on mobile and 77 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.50 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8925 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.85 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,930 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/compraventa/resolucion-conflictos
- Performance: 55/100
- Transfer: 2.14 MB
- CO2 estimate: 0.8606 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (77.6% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 127.76 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 127.76 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9159 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 46 small targets on mobile and 76 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9159 ms.
- [MEDIUM] Lazy-load offscreen images
- Defer below-the-fold imagery until it is likely to be viewed. Estimated byte savings: 127.76 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.85 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 14.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,160 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/derechos/patentes-marcas/servicios-oepm
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8400 g
- Page host green energy status: NOT GREEN
- Redundancy score: 78/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 33/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (78.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 519.07 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 519.07 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 519.07 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 519.07 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9466 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 30 small targets on mobile and 70 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 519.07 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9466 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 14.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 519 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,169 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,470 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/reconocimiento-cualificaciones/asistencia
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8386 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.04 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 73.65 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.04 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.04 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 73.65 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.04 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9171 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 22 small targets on mobile and 54 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.04 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9171 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,170 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,284 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/familia/pareja/matrimonio
- Performance: 55/100
- Transfer: 2.11 MB
- CO2 estimate: 0.8484 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 36/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 100.13 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 100.13 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9177 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 47 small targets on mobile and 78 on tablet.
- [MEDIUM] Refactor fixed-width components
- 3 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9177 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.82 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,180 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,284 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/conexion-servicios/residuos
- Performance: 56/100
- Transfer: 2.13 MB
- CO2 estimate: 0.8552 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.0% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.59 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 114.38 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.59 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.59 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 114.38 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.59 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9220 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 55 small targets on mobile and 83 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.59 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9220 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.83 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,220 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/empresas/productos/gestion-residuos
- Performance: 55/100
- Transfer: 2.14 MB
- CO2 estimate: 0.8611 g
- Page host green energy status: NOT GREEN
- Redundancy score: 77/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 32/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (76.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 518.94 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 120.67 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 518.94 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 518.94 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 120.67 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 518.94 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9252 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 69 small targets on mobile and 99 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 518.94 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9252 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.84 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 15.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 519 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,166 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,250 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/residencia/elecciones/europeas
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8394 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 42/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (78.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 519.41 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 519.41 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 519.41 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 519.41 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9255 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 32 small targets on mobile and 64 on tablet.
- [MEDIUM] Refactor fixed-width components
- 6 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 519.41 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9255 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 519 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,169 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,260 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tramites/hechos-vitales.html
- Performance: 55/100
- Transfer: 2.46 MB
- CO2 estimate: 0.9890 g
- Page host green energy status: NOT GREEN
- Redundancy score: 61/100
- Redundancy urgency: HIGH
- Modularization score: 40/100
- Modularization urgency: HIGH
- Dead-code score: 25/100
- Dead-code urgency: HIGH
- Non-critical resources score: 32/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 45/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 28/100
- Layout adaptation urgency: LOW
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 17/100
- Third-party JS urgency: LOW
- Estimated redundant transfer: 1.61 MB (65.3% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.15 MB savings)
- [HIGH] Reduce unused javascript (est. 470.42 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.80 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 116.30 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 470.42 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 1 request(s), 141.96 KB
- Third-party JS recommendations:
- [LOW] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.15 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 470.42 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 116.30 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 470.42 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.15 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9589 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Add meta description
- Provide a concise description to improve machine interpretation and preview quality.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [MEDIUM] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 10 small targets on mobile and 42 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [HIGH] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 598.44 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.15 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 598.44 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 470.42 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9589 ms.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 2.22 MB).
- [HIGH] Largest Contentful Paint
- Current value: 13.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 470 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,175 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,590 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/fiscalidad/pensionistas-transfronterizos
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8383 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 40/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.70 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.70 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.70 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.70 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9289 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 36 small targets on mobile and 70 on tablet.
- [MEDIUM] Refactor fixed-width components
- 5 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.70 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9289 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,290 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/atencionCiudadana/encuentraTuOficina.html
- Performance: 51/100
- Transfer: 7.37 MB
- CO2 estimate: 2.9590 g
- Page host green energy status: NOT GREEN
- Redundancy score: 38/100
- Redundancy urgency: HIGH
- Modularization score: 43/100
- Modularization urgency: HIGH
- Dead-code score: 9/100
- Dead-code urgency: HIGH
- Non-critical resources score: 21/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 45/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 42/100
- Compression urgency: MEDIUM
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 85/100
- Third-party JS urgency: HIGH
- Estimated redundant transfer: 1.78 MB (24.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.15 MB savings)
- [HIGH] Reduce unused javascript (est. 643.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.77 MB savings)
- Heavy initial-load requests: 22 (5.77 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 94.62 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 643.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT egeovisor.redsara.es: NOT GREEN; 41 request(s), 3.16 MB
- STYLESHEET egeovisor.redsara.es: NOT GREEN; 17 request(s), 446.32 KB
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 1 request(s), 142.07 KB
- SCRIPT visitas-web.redsara.es: NOT GREEN; 2 request(s), 43.73 KB
- STYLESHEET use.fontawesome.com: GREEN (Cloudflare); 1 request(s), 12.82 KB
- SCRIPT www.google.com: GREEN (Google Cloud); 1 request(s), 1012.00 B
- Third-party JS recommendations:
- [HIGH] Maintain a third-party JavaScript inventory
- Track 4 third-party script origin(s) and assign an owner plus business justification for each.
- [HIGH] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- [HIGH] Prioritize greener alternatives for third-party providers
- 2 third-party script origin(s) are not confirmed green in the Green Web Foundation dataset.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.15 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 643.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 94.62 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 643.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.15 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 11729 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Add meta description
- Provide a concise description to improve machine interpretation and preview quality.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [MEDIUM] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 18 small targets on mobile and 51 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.77 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.14 KB.
- [HIGH] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 397.73 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 63.38 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.77 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.15 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.14 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 643.46 KB.
- [HIGH] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 397.73 KB.
- [HIGH] Right-size images for viewport
- Avoid sending larger images than the rendered size needs. Estimated byte savings: 354.46 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 6.78 MB).
- [HIGH] Largest Contentful Paint
- Current value: 15.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 22.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 643 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,182 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 11,730 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,814 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/documentos/pasaportes-perdidos
- Performance: 56/100
- Transfer: 2.08 MB
- CO2 estimate: 0.8363 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 46/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (79.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 518.99 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 518.99 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 518.99 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 518.99 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9091 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 31 small targets on mobile and 62 on tablet.
- [MEDIUM] Refactor fixed-width components
- 8 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 518.99 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9091 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 519 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,090 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,277 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/reconocimiento-cualificaciones
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8382 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.65 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.65 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.65 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.65 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8990 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 40 small targets on mobile and 72 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.65 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8990 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,990 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/productos/normas-requisitos/productos-industriales
- Performance: 56/100
- Transfer: 2.11 MB
- CO2 estimate: 0.8493 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.6% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 104.49 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 104.49 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9197 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 68 small targets on mobile and 102 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9197 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.82 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,200 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/empresas/financiacion/nacional/info-general
- Performance: 55/100
- Transfer: 2.10 MB
- CO2 estimate: 0.8439 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.1% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.51 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 98.48 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.51 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.25 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.51 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 98.48 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.51 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9526 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 38 small targets on mobile and 69 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.51 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9526 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,530 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/condiciones-trabajo/prestaciones-desempleo
- Performance: 56/100
- Transfer: 2.15 MB
- CO2 estimate: 0.8645 g
- Page host green energy status: NOT GREEN
- Redundancy score: 67/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 29/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (77.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.68 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [HIGH] Lazy-load offscreen images and media galleries (est. 131.19 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.68 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.46 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.68 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 131.19 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.68 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9276 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 53 small targets on mobile and 85 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.68 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9276 ms.
- [MEDIUM] Lazy-load offscreen images
- Defer below-the-fold imagery until it is likely to be viewed. Estimated byte savings: 131.19 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.86 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,280 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/residencia/obtencion-residencia/info-general
- Performance: 55/100
- Transfer: 2.11 MB
- CO2 estimate: 0.8467 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.95 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 101.75 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.95 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.26 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.95 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 101.75 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.95 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9149 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 40 small targets on mobile and 66 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.95 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9149 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,150 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/derechos/patentes-marcas/diseno-industrial
- Performance: 56/100
- Transfer: 2.11 MB
- CO2 estimate: 0.8484 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.59 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 102.71 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.59 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.59 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 102.71 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.59 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9255 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 56 small targets on mobile and 94 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.59 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9255 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.82 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,260 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/impuestos/especiales/info-general
- Performance: 55/100
- Transfer: 2.10 MB
- CO2 estimate: 0.8450 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 40/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.0% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.05 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 96.31 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.05 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.05 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 96.31 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.05 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8921 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 56 small targets on mobile and 82 on tablet.
- [MEDIUM] Refactor fixed-width components
- 5 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.05 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8921 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,920 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/empresas/empleados/desplazados/laboral
- Performance: 55/100
- Transfer: 2.11 MB
- CO2 estimate: 0.8491 g
- Page host green energy status: NOT GREEN
- Redundancy score: 78/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 32/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 57/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.6% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.93 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 101.64 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.93 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.93 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 101.64 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.93 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9207 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 63 small targets on mobile and 100 on tablet.
- [HIGH] Refactor fixed-width components
- 16 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.93 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9207 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,210 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/seguridad-social-pensiones/Pensiones-clases-pasivas/jubilacion-retiro
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8379 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.61 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.61 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.61 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.61 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8967 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 29 small targets on mobile and 61 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.61 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8967 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,970 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/empresas/servicios/actividades-transfronterizas/sector-farmaceutico
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8387 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.52 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.52 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.26 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.52 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.52 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9516 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 40 small targets on mobile and 74 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.52 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9516 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,520 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/buscar-empleo
- Performance: 56/100
- Transfer: 2.15 MB
- CO2 estimate: 0.8641 g
- Page host green energy status: NOT GREEN
- Redundancy score: 67/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 29/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (77.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.06 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [HIGH] Lazy-load offscreen images and media galleries (est. 131.19 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.06 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.06 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 131.19 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.06 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9199 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 61 small targets on mobile and 99 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.06 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9199 ms.
- [MEDIUM] Lazy-load offscreen images
- Defer below-the-fold imagery until it is likely to be viewed. Estimated byte savings: 131.19 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.85 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,200 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/empresas/impuestos/especiales/carbon
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8392 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.52 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.52 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.52 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.52 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8977 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 40 small targets on mobile and 72 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.52 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8977 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,980 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,284 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/residencia/fallecimiento-repatriacion
- Performance: 55/100
- Transfer: 2.10 MB
- CO2 estimate: 0.8444 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.1% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.51 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 99.56 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.51 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.51 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 99.56 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.51 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9274 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 35 small targets on mobile and 62 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.51 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9274 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,270 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/fiscalidad/trabajadores-transfronterizos
- Performance: 55/100
- Transfer: 2.08 MB
- CO2 estimate: 0.8362 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 42/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.48 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.48 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.48 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.48 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9271 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 48 small targets on mobile and 83 on tablet.
- [MEDIUM] Refactor fixed-width components
- 6 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.48 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9271 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,270 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,277 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/residencia/obtencion-residencia/info-general
- Performance: 55/100
- Transfer: 2.11 MB
- CO2 estimate: 0.8468 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.64 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 101.75 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.64 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.47 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.64 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 101.75 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.64 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9011 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 39 small targets on mobile and 68 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.64 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9011 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,010 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/derechos/patentes-marcas/observancia
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8394 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (78.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 519.41 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 519.41 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 519.41 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 519.41 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9338 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 29 small targets on mobile and 61 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 519.41 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9338 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 14.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 519 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,169 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,340 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/contratacion-publica/comunicar-irregularidad
- Performance: 56/100
- Transfer: 2.13 MB
- CO2 estimate: 0.8564 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (77.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.71 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 119.38 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.71 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.71 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 119.38 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.71 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9221 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 42 small targets on mobile and 69 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.71 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9221 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.84 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,220 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/condiciones-trabajo/finalizacion-contrato
- Performance: 55/100
- Transfer: 2.10 MB
- CO2 estimate: 0.8432 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.93 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 94.54 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.93 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.93 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 94.54 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.93 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9260 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 34 small targets on mobile and 63 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.93 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9260 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 14.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,260 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/empresas/servicios/permisos
- Performance: 56/100
- Transfer: 2.13 MB
- CO2 estimate: 0.8541 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 36/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.1% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.41 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 112.48 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.41 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.41 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 112.48 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.41 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9107 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 45 small targets on mobile and 77 on tablet.
- [MEDIUM] Refactor fixed-width components
- 3 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.41 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9107 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.83 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,110 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/documentos/pasaportes-caducados
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8403 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 40/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (78.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 520.16 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 520.16 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 520.16 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 520.16 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9491 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 33 small targets on mobile and 64 on tablet.
- [MEDIUM] Refactor fixed-width components
- 5 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 520.16 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9491 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 520 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,169 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,490 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,284 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/residencia/obtencion-nacionalidad
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8388 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.52 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.52 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.52 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.52 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9276 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 39 small targets on mobile and 66 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.52 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9276 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,280 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/compraventa/inmobiliario
- Performance: 55/100
- Transfer: 2.10 MB
- CO2 estimate: 0.8420 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.3% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.59 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 92.30 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.59 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.59 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 92.30 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.59 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9299 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 34 small targets on mobile and 67 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.59 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9299 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 15.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,300 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/derechos/patentes-marcas/servicios-oepm
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8400 g
- Page host green energy status: NOT GREEN
- Redundancy score: 78/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 33/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (78.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 519.95 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 519.95 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 519.95 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 519.95 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9416 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 30 small targets on mobile and 70 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 519.95 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9416 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 14.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 520 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,169 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,420 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/va/index.html
- Performance: 55/100
- Transfer: 3.10 MB
- CO2 estimate: 1.2460 g
- Page host green energy status: NOT GREEN
- Redundancy score: 60/100
- Redundancy urgency: HIGH
- Modularization score: 41/100
- Modularization urgency: HIGH
- Dead-code score: 21/100
- Dead-code urgency: HIGH
- Non-critical resources score: 29/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 92/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 17/100
- Third-party JS urgency: LOW
- Estimated redundant transfer: 1.54 MB (49.6% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.13 MB savings)
- [HIGH] Reduce unused javascript (est. 412.90 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- [MEDIUM] Reduce DOM complexity and redundant markup
- Heavy initial-load requests: 7 (2.28 MB total)
- On-demand modularization candidates:
- [HIGH] Lazy-load offscreen images and media galleries (est. 241.55 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 412.90 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 1 request(s), 141.98 KB
- Third-party JS recommendations:
- [LOW] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.13 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 412.90 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 241.55 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 412.90 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.13 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8957 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 72 small targets on mobile and 120 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [HIGH] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 688.02 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 29.76 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.13 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 688.02 KB.
- [HIGH] Right-size images for viewport
- Avoid sending larger images than the rendered size needs. Estimated byte savings: 476.77 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 412.90 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 2.95 MB).
- [HIGH] Largest Contentful Paint
- Current value: 15.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 413 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,162 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Serve images in next-gen formats
- Current value: Est savings of 688 KiB
- WSG: 11 Optimize media to reduce resource use (https://www.w3.org/TR/web-sustainability-guidelines/#optimize-media-to-reduce-resource-use)
- [HIGH] Defer offscreen images
- Current value: Est savings of 242 KiB
- WSG: 3 Modularize bandwidth-heavy components (https://www.w3.org/TR/web-sustainability-guidelines/#modularize-bandwidth-heavy-components)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/condiciones-trabajo/jornada-permisos
- Performance: 56/100
- Transfer: 2.10 MB
- CO2 estimate: 0.8449 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.04 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 94.47 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.04 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.04 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 94.47 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.04 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9175 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 55 small targets on mobile and 85 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.04 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9175 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 532 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,180 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/derechos/dominios-es
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8398 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.6% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.52 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.52 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.52 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.52 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9544 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 37 small targets on mobile and 72 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.52 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9544 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,540 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,284 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/igualdad
- Performance: 55/100
- Transfer: 2.12 MB
- CO2 estimate: 0.8528 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.3% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 111.77 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 111.77 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9155 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 49 small targets on mobile and 77 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9155 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.83 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,160 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/familia/menores/gestacion-sustitucion
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8381 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 36/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.57 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.57 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.57 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.57 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8981 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 31 small targets on mobile and 59 on tablet.
- [MEDIUM] Refactor fixed-width components
- 3 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.57 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8981 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 16.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,980 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/impuestos/especiales/electricidad
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8382 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.61 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.61 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.47 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.61 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.61 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8946 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 37 small targets on mobile and 65 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.61 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8946 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,950 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/avisoLegal.html
- Performance: 56/100
- Transfer: 1.93 MB
- CO2 estimate: 0.7759 g
- Page host green energy status: NOT GREEN
- Redundancy score: 71/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 31/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 45/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 28/100
- Layout adaptation urgency: LOW
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 17/100
- Third-party JS urgency: LOW
- Estimated redundant transfer: 1.61 MB (83.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.15 MB savings)
- [HIGH] Reduce unused javascript (est. 470.99 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 5 (1.70 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 73.65 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 470.99 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 1 request(s), 141.98 KB
- Third-party JS recommendations:
- [LOW] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.15 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 470.99 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 73.65 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 470.99 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.15 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9290 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Add meta description
- Provide a concise description to improve machine interpretation and preview quality.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [MEDIUM] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 10 small targets on mobile and 42 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.15 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 470.99 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9290 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.78 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 471 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,174 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,290 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/residencia/obtencion-residencia/registrar-familiares
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8380 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.57 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.57 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.57 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.57 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8986 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 31 small targets on mobile and 60 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.57 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8986 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,990 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/condiciones-trabajo/contratos-salario
- Performance: 55/100
- Transfer: 2.10 MB
- CO2 estimate: 0.8438 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (78.4% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 519.89 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 92.30 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 519.89 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 519.89 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 92.30 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 519.89 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9221 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 59 small targets on mobile and 91 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 519.89 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9221 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 16.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 520 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,167 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,220 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/insolvencia-liquidacion/masa-activa-pasiva-fin
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8390 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.6% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.64 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.64 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.64 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.64 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9241 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 33 small targets on mobile and 61 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.64 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9241 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,240 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/contratacion-publica/participar-licitaciones/asistencia-informacion
- Performance: 56/100
- Transfer: 2.12 MB
- CO2 estimate: 0.8520 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.3% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.64 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 98.91 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.64 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.64 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 98.91 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.64 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9213 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 44 small targets on mobile and 68 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.64 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9213 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.83 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,210 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tramites.html
- Performance: 56/100
- Transfer: 1.93 MB
- CO2 estimate: 0.7755 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 32/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 45/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 17/100
- Third-party JS urgency: LOW
- Estimated redundant transfer: 1.61 MB (83.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.15 MB savings)
- [HIGH] Reduce unused javascript (est. 470.78 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 5 (1.70 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 73.65 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 470.78 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 1 request(s), 141.97 KB
- Third-party JS recommendations:
- [LOW] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.15 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 470.78 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 73.65 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 470.78 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.15 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8958 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Add meta description
- Provide a concise description to improve machine interpretation and preview quality.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [MEDIUM] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 17 small targets on mobile and 49 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.15 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 470.78 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8958 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.78 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 471 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,175 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,960 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/viajes/transporte-animales
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8413 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.3% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.68 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 91.14 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.68 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.47 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.68 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 91.14 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.68 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8985 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 37 small targets on mobile and 69 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.68 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8985 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,990 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/empresas/servicios/actividades-transfronterizas/registros-notariado
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8381 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.99 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.99 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.99 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.99 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9061 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 28 small targets on mobile and 59 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.99 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9061 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 16.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,060 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/empresas/empleados/seguridad-social/alta-empresario
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8388 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 38/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.6% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.72 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.72 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.72 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.72 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9213 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 44 small targets on mobile and 74 on tablet.
- [MEDIUM] Refactor fixed-width components
- 4 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.72 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9213 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 15.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,210 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/empresas/contratacion-publica/presentar-oferta
- Performance: 55/100
- Transfer: 2.13 MB
- CO2 estimate: 0.8576 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 36/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (77.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.59 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 122.83 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.59 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.59 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 122.83 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.59 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9302 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 47 small targets on mobile and 77 on tablet.
- [MEDIUM] Refactor fixed-width components
- 3 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.59 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9302 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.84 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 13.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,300 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/conexion-servicios/residuos
- Performance: 55/100
- Transfer: 2.13 MB
- CO2 estimate: 0.8553 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 36/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.1% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 114.38 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 114.38 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9290 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 54 small targets on mobile and 84 on tablet.
- [MEDIUM] Refactor fixed-width components
- 3 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9290 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.83 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 16.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,290 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/consumidores/conexion-servicios/residuos
- Performance: 55/100
- Transfer: 2.13 MB
- CO2 estimate: 0.8552 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 36/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 33/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 4/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.0% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.55 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 114.38 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.55 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.55 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 114.38 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.55 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9260 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 54 small targets on mobile and 84 on tablet.
- [MEDIUM] Refactor fixed-width components
- 3 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 2 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 2 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.55 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9260 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.83 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 14.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,260 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/familia/genero
- Performance: 56/100
- Transfer: 2.10 MB
- CO2 estimate: 0.8448 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.0% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.51 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 99.59 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.51 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.51 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 99.59 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.51 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9239 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 44 small targets on mobile and 77 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.51 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9239 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.8 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,240 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/financiacion/nacional/registros-notariado
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8390 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.52 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.52 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.52 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.52 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9305 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 30 small targets on mobile and 59 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.52 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9305 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 14.4 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,310 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/seguro-credito
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8388 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.52 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.52 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.52 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.52 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9514 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 48 small targets on mobile and 79 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.52 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9514 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 535 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,510 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tramites/Relacionarte-electronicamente.html
- Performance: 56/100
- Transfer: 1.95 MB
- CO2 estimate: 0.7824 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 45/100
- Modularization urgency: HIGH
- Dead-code score: 31/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 45/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 17/100
- Third-party JS urgency: LOW
- Estimated redundant transfer: 1.60 MB (82.4% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 471.52 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 5 (1.70 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 74.43 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 471.52 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 1 request(s), 141.98 KB
- Third-party JS recommendations:
- [LOW] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 471.52 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 74.43 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 471.52 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8985 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Add meta description
- Provide a concise description to improve machine interpretation and preview quality.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 38 small targets on mobile and 72 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 471.52 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8985 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 472 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,171 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,990 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/vehiculos/compraventa/matriculacion
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8385 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 34/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (79.0% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 518.99 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 73.65 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 518.99 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 518.99 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 73.65 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 518.99 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9065 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 23 small targets on mobile and 57 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 518.99 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9065 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.7 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.5 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 519 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,169 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,070 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/residencia/elecciones/europeas
- Performance: 55/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8394 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 42/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.65 MB (78.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 519.07 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 519.07 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 519.07 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 519.07 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9288 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 32 small targets on mobile and 64 on tablet.
- [MEDIUM] Refactor fixed-width components
- 6 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 519.07 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9288 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.80 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 15.2 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 519 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,169 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,290 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ayudas/gestionSuscripciones.html
- Performance: 55/100
- Transfer: 2.00 MB
- CO2 estimate: 0.8035 g
- Page host green energy status: NOT GREEN
- Redundancy score: 67/100
- Redundancy urgency: HIGH
- Modularization score: 44/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 45/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 17/100
- Third-party JS urgency: LOW
- Estimated redundant transfer: 1.60 MB (80.1% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 470.08 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 5 (1.70 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 73.65 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 470.08 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 1 request(s), 141.98 KB
- Third-party JS recommendations:
- [LOW] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 470.08 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 73.65 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 470.08 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8998 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Add meta description
- Provide a concise description to improve machine interpretation and preview quality.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 22 small targets on mobile and 55 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 150.35 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 12.60 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 470.08 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8998 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 150.35 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.85 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 12.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 470 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,000 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/trabajo-jubilacion/reconocimiento-cualificaciones/asistencia
- Performance: 56/100
- Transfer: 2.08 MB
- CO2 estimate: 0.8374 g
- Page host green energy status: NOT GREEN
- Redundancy score: 69/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.8% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.73 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 73.65 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.73 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.73 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 73.65 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.73 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 8957 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 22 small targets on mobile and 54 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.73 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 8957 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 11.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 8,960 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/productos/normas-especificaciones/sector-farmaceutico0
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8384 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 30/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.11 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.11 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.11 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.11 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9349 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 44 small targets on mobile and 79 on tablet.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.11 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9349 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 10.9 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,350 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/eu/Tu-espacio-europeo/derechos-obligaciones/empresas/servicios/permisos
- Performance: 56/100
- Transfer: 2.13 MB
- CO2 estimate: 0.8540 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 36/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.2% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 112.48 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 112.48 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9228 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 45 small targets on mobile and 77 on tablet.
- [MEDIUM] Refactor fixed-width components
- 3 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9228 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.83 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.3 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,230 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/gl/Tu-espacio-europeo/derechos-obligaciones/ciudadanos/educacion/practicas/contrato
- Performance: 55/100
- Transfer: 2.10 MB
- CO2 estimate: 0.8451 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 34/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (78.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 532.63 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 97.35 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 532.63 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.27 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 532.63 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 97.35 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 532.63 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9447 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 30 small targets on mobile and 63 on tablet.
- [MEDIUM] Refactor fixed-width components
- 2 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 532.63 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9447 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.81 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 533 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,450 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/en/Tu-espacio-europeo/derechos-obligaciones/empresas/contratacion-publica/participar-licitaciones/procedimientos-adjudicacion
- Performance: 55/100
- Transfer: 2.13 MB
- CO2 estimate: 0.8573 g
- Page host green energy status: NOT GREEN
- Redundancy score: 68/100
- Redundancy urgency: HIGH
- Modularization score: 46/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 35/100
- Metadata urgency: MEDIUM
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (77.9% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 534.46 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 122.83 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 534.46 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.28 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 534.46 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 122.83 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 534.46 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9119 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Add canonical URL metadata
- Use rel=canonical to reduce duplicate URL ambiguity for crawlers and tooling.
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 55 small targets on mobile and 79 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 534.46 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9119 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.84 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.6 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 14.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,168 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,120 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
### https://administracion.gob.es/pag_Home/ca/Tu-espacio-europeo/derechos-obligaciones/empresas/inicio-gestion-cierre/seguro-credito
- Performance: 56/100
- Transfer: 2.09 MB
- CO2 estimate: 0.8388 g
- Page host green energy status: NOT GREEN
- Redundancy score: 66/100
- Redundancy urgency: HIGH
- Modularization score: 47/100
- Modularization urgency: HIGH
- Dead-code score: 30/100
- Dead-code urgency: HIGH
- Non-critical resources score: 35/100
- Non-critical resources urgency: HIGH
- Form validation score: 70/100
- Form validation urgency: HIGH
- Metadata score: 25/100
- Metadata urgency: LOW
- Layout adaptation score: 32/100
- Layout adaptation urgency: MEDIUM
- Lightweight security score: 31/100
- Lightweight security urgency: MEDIUM
- Dependency maintenance score: 2/100
- Dependency maintenance urgency: MEDIUM
- Expected-files score: 30/100
- Expected-files urgency: MEDIUM
- Compression score: 100/100
- Compression urgency: HIGH
- Optimization score: 100/100
- Optimization urgency: HIGH
- Offline support score: 100/100
- Offline support urgency: HIGH
- Third-party JS risk score: 34/100
- Third-party JS urgency: MEDIUM
- Estimated redundant transfer: 1.66 MB (79.7% of transfer)
- Redundancy recommendations:
- [HIGH] Reduce unused css (est. 1.14 MB savings)
- [HIGH] Reduce unused javascript (est. 533.65 KB savings)
- [MEDIUM] Enable and verify text compression (est. 1.25 MB savings)
- Heavy initial-load requests: 6 (1.84 MB total)
- On-demand modularization candidates:
- [MEDIUM] Lazy-load offscreen images and media galleries (est. 88.98 KB)
- Load imagery only when it enters the viewport or when a user opens the relevant section.
- [HIGH] Split JavaScript by route or interaction (est. 533.65 KB)
- Move non-critical bundles behind route-level or event-driven imports so they are only fetched on demand.
- [HIGH] Defer non-critical UI modules until after first render
- Keep only above-the-fold resources in the initial path; hydrate or import secondary modules later.
- [HIGH] Modularize heavy stylesheet asset from administracion.gob.es (est. 1.12 MB)
- Split this stylesheet so component-specific CSS is delivered only when the component is rendered.
- External CSS/JS hosting checks:
- SCRIPT www.googletagmanager.com: GREEN (Google Cloud); 2 request(s), 283.28 KB
- Third-party JS recommendations:
- [MEDIUM] Maintain a third-party JavaScript inventory
- Track 1 third-party script origin(s) and assign an owner plus business justification for each.
- [MEDIUM] Reduce third-party script payload and requests
- Defer non-critical tags, remove unused vendors, and gate scripts behind consent or user interaction.
- Dead-code recommendations:
- [HIGH] Remove unused CSS selectors and component styles (est. 1.14 MB savings)
- Trim styles that never match rendered markup and split component CSS so only used styles are shipped.
- [HIGH] Remove unused JavaScript and feature bundles (est. 533.65 KB savings)
- Drop unused packages and feature code, or move them behind route-level or interaction-triggered imports.
- Non-critical loading candidates:
- [MEDIUM] Lazy-load offscreen images (est. 88.98 KB deferrable)
- Load below-the-fold images only when they approach the viewport.
- [HIGH] Defer non-critical JavaScript (est. 533.65 KB deferrable)
- Split bundles and load feature code on interaction or route transition.
- [HIGH] Inline critical CSS and defer remainder (est. 1.14 MB deferrable)
- Ship only above-the-fold CSS in initial render path and defer non-critical styles.
- [HIGH] Eliminate render-blocking resources (est. 9312 ms unblock)
- Defer scripts/styles not required for first paint and preload only truly critical assets.
- [HIGH] Evaluate deferred loading for heavy stylesheet from administracion.gob.es (est. 1.12 MB deferrable)
- Confirm this asset is required for first paint; defer or lazy-load if not critical.
- Form validation recommendations:
- [HIGH] Missing associated label
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] No error messaging hook
- 1 unique form control signature(s) on this page include this issue.
- [MEDIUM] Missing autocomplete for tooling support
- 1 unique form control signature(s) on this page include this issue.
- Metadata recommendations:
- [MEDIUM] Complete Open Graph metadata
- Include og:title, og:description, og:type, and og:url for robust machine-readable sharing metadata.
- [LOW] Add twitter:card metadata
- Include twitter card metadata to improve cross-platform machine-readable previews.
- Layout adaptation recommendations:
- [HIGH] Increase touch target sizes
- Ensure interactive controls are at least 44x44 CSS px. Detected 48 small targets on mobile and 79 on tablet.
- [MEDIUM] Refactor fixed-width components
- 1 element(s) exceeded viewport width in tested layouts; use responsive component constraints.
- Lightweight security recommendations:
- [HIGH] Add a Content-Security-Policy header
- Add an appropriate CSP to reduce script injection and resource loading risk.
- [LOW] Define a Permissions-Policy
- Restrict browser capabilities to only what the application needs.
- [MEDIUM] Add SRI to external scripts
- 1 external script tag(s) are missing integrity attributes.
- Dependency maintenance recommendations:
- [MEDIUM] Add integrity attributes for external dependencies
- 1 external script dependency URL(s) are missing SRI integrity attributes.
- Language/runtime version recommendations:
- [LOW] No obvious outdated runtime version disclosed
- No clearly outdated runtime version signals were exposed in sampled HTTP headers. Verify language/runtime versions in source and CI since backend versions are not always externally visible.
- Expected-files recommendations:
- [MEDIUM] Add beneficial discoverability and maintenance files
- Missing beneficial file(s): /.well-known/security.txt, /manifest.webmanifest, /favicon.ico.
- Compression recommendations:
- [HIGH] Enable Brotli/gzip for text assets
- Compress HTML, CSS, JS, JSON, SVG, and XML responses with Brotli or gzip. Estimated savings: 1.25 MB.
- [HIGH] Minify CSS before transfer
- Minification amplifies compression efficiency and reduces payload size. Estimated savings: 871.06 KB.
- [MEDIUM] Use modern image compression formats
- Prefer AVIF/WebP over legacy formats where possible to reduce transfer size. Estimated savings: 123.71 KB.
- [MEDIUM] Minify JavaScript before transfer
- Minify JS bundles so transport compression produces better results with fewer bytes. Estimated savings: 62.26 KB.
- [LOW] Improve image encoding quality/size
- Re-encode oversized images and tune compression quality for significant byte savings. Estimated savings: 7.37 KB.
- Optimization recommendations:
- [HIGH] Enable text compression
- Serve text assets with Brotli or gzip to remove avoidable transfer bloat. Estimated byte savings: 1.25 MB.
- [HIGH] Remove unused CSS
- Trim unused selectors and split CSS so only needed styles are shipped. Estimated byte savings: 1.14 MB.
- [HIGH] Minify CSS
- Use minified production CSS output to reduce bytes in transit. Estimated byte savings: 871.06 KB.
- [HIGH] Remove unused JavaScript
- Reduce dead JS and split bundles to avoid shipping non-critical code. Estimated byte savings: 533.65 KB.
- [HIGH] Eliminate render-blocking resources
- Inline critical assets and defer non-critical scripts/styles for faster rendering. Estimated render unblocking: 9312 ms.
- [MEDIUM] Serve images in next-gen formats
- Convert high-byte images to more efficient formats such as AVIF or WebP. Estimated byte savings: 123.71 KB.
- Offline/caching recommendations:
- [HIGH] Add service worker support
- Register a service worker to support resilient caching and offline behavior for key routes.
- [HIGH] Ensure critical routes work offline
- Provide an offline fallback strategy for key pages and shell assets.
- [MEDIUM] Improve web app manifest support
- Complete manifest fields so clients can install and run an app-like experience.
- [MEDIUM] Support offline start URL behavior
- Ensure start URL and shell routing can load in disconnected conditions.
- [MEDIUM] Strengthen static asset cache TTL
- Improve long-lived cache headers for immutable static assets (estimated savings opportunity: 1.79 MB).
- [HIGH] Largest Contentful Paint
- Current value: 12.0 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Speed Index
- Current value: 11.1 s
- WSG: 1 Set goals based on performance and energy impact (https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact)
- [HIGH] Reduce unused JavaScript
- Current value: Est savings of 534 KiB
- WSG: 16 Use dependencies appropriately and ensure maintenance (https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance)
- [HIGH] Reduce unused CSS
- Current value: Est savings of 1,170 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
- [HIGH] Eliminate render-blocking resources
- Current value: Est savings of 9,310 ms
- WSG: 18 Use the most efficient solution for your service (https://www.w3.org/TR/web-sustainability-guidelines/#use-the-most-efficient-solution-for-your-service)
- [HIGH] Enable text compression
- Current value: Est savings of 1,283 KiB
- WSG: 2 Remove unnecessary or redundant information (https://www.w3.org/TR/web-sustainability-guidelines/#remove-unnecessary-or-redundant-information)
## Copy/Paste Issue Snippets
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 17.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 412 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 14.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 413 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 10.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 9.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 519 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 10.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 518 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 10.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 15.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 518 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 10.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 9.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 532 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 10.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 519 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 14.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 519 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 14.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 15.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 532 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 519 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 14.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 471 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 532 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 520 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 9.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 9.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 17.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 411 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 14.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 14.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 519 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 15.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 519 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 519 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 13.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 470 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 15.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 22.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 643 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 519 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 14.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 519 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 14.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 520 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 15.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 14.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 520 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 15.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 413 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 532 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 16.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 471 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 16.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 520 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 471 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 16.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 15.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 13.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 16.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 14.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.8 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 14.4 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 535 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 472 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.7 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.5 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 519 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 15.2 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 519 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 12.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 470 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 11.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 10.9 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.3 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 533 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.6 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 14.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Largest Contentful Paint
- Lighthouse audit: largest-contentful-paint
- Current value: 12.0 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Largest Contentful Paint marks the time at which the largest text or image is painted. [Learn more about the Largest Contentful Paint metric](https://developer.chrome.com/docs/lighthouse/performance/lighthouse-largest-contentful-paint/)
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Speed Index
- Lighthouse audit: speed-index
- Current value: 11.1 s
- WSG guideline: 1 Set goals based on performance and energy impact
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#set-goals-based-on-performance-and-energy-impact
### Why this matters
Speed Index shows how quickly the contents of a page are visibly populated. [Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```
```md
## Improve Reduce unused JavaScript
- Lighthouse audit: unused-javascript
- Current value: Est savings of 534 KiB
- WSG guideline: 16 Use dependencies appropriately and ensure maintenance
- WSG link: https://www.w3.org/TR/web-sustainability-guidelines/#use-dependencies-appropriately-and-ensure-maintenance
### Why this matters
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. [Learn how to reduce unused JavaScript](https://developer.chrome.com/docs/lighthouse/performance/unused-javascript/).
### Definition of done
- [ ] Metric improves in Lighthouse on key templates
- [ ] Changes documented in release notes
- [ ] Re-scan confirms improvement
```