Stats as of 2026-05-27 18:19 UTC — last scan: 2026-05-22

54 scan batches run

20,424 of 82,714 available pages audited (24.7% coverage) 18,563 successful audits (90.9% of audited)

Overall average Lighthouse scores (0–100 scale):

Performance Accessibility Best Practices SEO
88 88 91 88

Lighthouse Scores by Country

Country Audited Available Perf A11y Best Practices SEO Last Scan
Austria 821 821 88 90 91 89 2026-05-20
Belgium 1,309 1,309 89 91 91 90 2026-05-20
Bulgaria 291 291 84 80 88 89 2026-05-20
Croatia 233 233 90 72 91 90 2026-05-21
Czechia 843 843 91 86 91 89 2026-05-21
Denmark 1,521 1,521 90 94 96 89 2026-05-21
Estonia 396 396 92 87 85 89 2026-05-21
Finland 180 180 89 94 95 87 2026-05-21
France 502 10,007 91 91 92 92 2026-05-21
Germany 1,895 6,555 91 91 96 88 2026-05-21
Greece 1,241 1,748 88 85 91 88 2026-05-21
Hungary 390 390 85 76 82 87 2026-05-21
Iceland 139 139 89 91 91 91 2026-05-22
Ireland 522 522 89 91 89 88 2026-05-21
Italy 1,019 5,338 85 88 93 88 2026-05-22
Latvia 802 802 80 89 88 89 2026-05-21
Lithuania 120 120 87 80 87 85 2026-05-22
Luxembourg 571 571 90 93 93 91 2026-05-22
Malta 608 608 88 85 79 82 2026-05-22
Netherlands 937 937 93 94 93 88 2026-05-22
Norway 239 239 91 93 92 90 2026-05-22
Poland 1,607 14,938 88 87 89 90 2026-05-22
Portugal 1,241 3,503 83 83 86 89 2026-05-22
Cyprus 24 24 80 86 84 87 2026-05-18
Romania 216 799 87 75 89 81 2026-05-20
Slovakia 434 434 86 87 90 88 2026-05-20
Slovenia 200 200 88 79 89 85 2026-05-20
Spain 396 6,069 86 87 88 87 2026-05-18
Sweden 793 1,558 89 92 92 85 2026-05-20
Switzerland 535 2,117 86 89 96 88 2026-05-20
United Kingdom 399 19,502 92 93 91 86 2026-05-21

Scores are averages across all successfully audited URLs, displayed as 0–100 (Lighthouse stores scores as 0.0–1.0 internally).

📥 Machine-readable results: Download machine-readable Lighthouse data (JSON) · Download per-URL Lighthouse data (CSV)

Overview

The Lighthouse scanner runs the Google Lighthouse CLI against each government page URL and extracts four headline category scores:

Category What it measures
Performance Page speed and Core Web Vitals (LCP, FID, CLS, etc.)
Accessibility WCAG-aligned accessibility checks (colour contrast, ARIA labels, keyboard navigation, …)
Best Practices Security headers, HTTPS, modern web APIs, console errors
SEO Search-engine crawlability, meta tags, structured data

All scores are on a 0–100 scale (stored internally as 0.0–1.0).

Note: PWA (Progressive Web App) audits are skipped for government sites because they are not relevant to the EU Web Accessibility Directive requirements and omitting them reduces per-URL scan time.

How to Interpret the Scores

Lighthouse scores are based on a single page load at the time of the audit. Scores can vary between runs due to network conditions and server load, so the values shown here are averages across all successfully audited URLs for each country.

  • 90–100: Good
  • 50–89: Needs improvement
  • 0–49: Poor

For a detailed breakdown of individual audit failures, download the machine-readable Lighthouse data (JSON) or the per-URL Lighthouse data (CSV).

Running a Scan

  1. Go to Actions → Scan Lighthouse
  2. Click Run workflow
  3. Optionally enter a country code (e.g. ICELAND) or leave blank to scan all
  4. Optionally adjust the rate limit, concurrency, and skip-recently-scanned-days parameters

The scan runs automatically every day at 03:00 UTC. With --concurrency 3 and skipping URLs audited within the last 30 days, each daily run covers roughly 750–1,000 URLs while ensuring every URL is refreshed at least monthly.

Via the command line

# Scan a single country
python3 -m src.cli.scan_lighthouse --country ICELAND

# Scan all countries (with a 110-minute runtime cap and 3 concurrent processes)
python3 -m src.cli.scan_lighthouse \
  --all \
  --max-runtime 110 \
  --concurrency 3 \
  --skip-recently-scanned-days 30 \
  --only-categories performance,accessibility,best-practices,seo \
  --throttling-method provided

Architecture

flowchart TD
    A["scan-lighthouse.yml\n(GitHub Actions — daily at 03:00 UTC)"]
    A --> B["scan_lighthouse.py (CLI)"]
    B --> C["LighthouseScannerJob.scan_country()"]
    C --> D["Filter out recently-scanned URLs\n(_get_recently_scanned_urls)"]
    D --> E["LighthouseScanner.scan_urls_batch()\n(asyncio.Semaphore — up to 3 concurrent)"]
    E --> F["For each URL (parallel)"]
    F --> G["subprocess: lighthouse URL --output=json\n--only-categories=performance,accessibility,\nbest-practices,seo --throttling-method=provided"]
    G --> H["_parse_lighthouse_output() → 4 category scores"]
    H --> I["Save to url_lighthouse_results table\n(incremental, per URL)"]
    I --> J["Write *_lighthouse.toon output file"]