vital-scans open quality ledger

www.medicare.gov: Lighthouse — week 2026-W38

187 pages sampled by Google Lighthouse (its own headless Chrome). Scores are 0–100 (higher is better); metrics are Core Web Vitals. Download: CSV (per-page scores) · JSON (AI-ready, includes recommendations) · Priority pages CSV · Priority pages JSON.

Trend

Lighthouse category scores over 17 weeks
Performance Accessibility Best practices SEO W24W32W401000
Lighthouse category scores by week
WeekPerformanceAccessibilityBest practicesSEO
2026-W24371005492
2026-W25381005492
2026-W26381005492
2026-W27381005492
2026-W28381005492
2026-W29381005492
2026-W30401005492
2026-W31411005492
2026-W32441005492
2026-W33421005492
2026-W34411005492
2026-W35411005492
2026-W36411005492
2026-W37411005492
2026-W38421005492
2026-W39391005492
2026-W40431005492

History & Trends → Severity, Lighthouse and other measures across 17 weeks.

Performance impact

How far pages fall short of Google's "good" benchmarks: Largest Contentful Paint ≤ 2.5s and page weight ≤ 1.6 MB. Lower is better.

Avg extra LCP over 2.5s
12.2s 187/187 pages over
Avg extra weight over 1.6 MB
5.95 MB 209/211 pages over

Set page_loads_per_week for this target to also estimate total wasted time and data (the way daily-dap uses traffic counts).

Medians across sampled pages

Performance
42/100
Accessibility
100/100
Best practices
54/100
SEO
92/100
Agentic browsing
100/100
Largest Contentful Paint
18.1s
First Contentful Paint
8.6s
Speed Index
8.8s
Total Blocking Time
0.8s
Cumulative Layout Shift
0

Recommendations

Issues Lighthouse flagged across the 187 sampled page(s), beyond the headline scores — grouped by category and ranked by how many pages they affect. Estimated savings (transfer bytes or load time) are Lighthouse's own estimates where available. Accessibility audits are intentionally omitted; they overlap with the axe-core findings on the Accessibility page.

Performance

Performance recommendations from Lighthouse, by sampled pages affected.
RecommendationPagesEst. saving
Use efficient cache lifetimes 187/187 597.4s
Reduce unused JavaScript 187/187 111.1 MB · 387.2s
Reduce JavaScript execution time 187/187 229.2s
Minimize main-thread work 187/187 229.0s
Reduce unused CSS 187/187 13.8 MB · 74.5s
Minify JavaScript 187/187 13.7 MB · 63.9s
First Contentful Paint 187/187 —
Largest Contentful Paint 187/187 —
Speed Index 187/187 —
Time to Interactive 187/187 —
Max Potential First Input Delay 185/187 —
Page prevented back/forward cache restoration 185/187 —
Render-blocking requests 183/187 445.8s
Total Blocking Time 183/187 —
Network dependency tree 179/187 —
Avoid multiple page redirects 130/187 238.3s
Document request latency 116/187 13.9s
Legacy JavaScript 108/187 23.6s
Font display 100/187 10.5s
Forced reflow 76/187 —
Initial server response time was short 61/187 6.2s
Layout shift culprits 21/187 —
Improve image delivery 6/187 1.1s
LCP breakdown 6/187 —
LCP request discovery 3/187 —

Best Practices

Best Practices recommendations from Lighthouse, by sampled pages affected.
RecommendationPagesEst. saving
Missing source maps for large first-party JavaScript 187/187 —
Uses third-party cookies 186/187 —
Issues were logged in the `Issues` panel in Chrome Devtools 186/187 —
Serves images with low resolution 183/187 —
Uses deprecated APIs 177/187 —
Browser errors were logged to the console 26/187 —
Requests the geolocation permission on page load 5/187 —

SEO

SEO recommendations from Lighthouse, by sampled pages affected.
RecommendationPagesEst. saving
Document does not have a meta description 92/187 —
Links are not crawlable 78/187 —
Links do not have descriptive text 1/187 —

Agentic (AI-readiness)

Agentic (AI-readiness) recommendations from Lighthouse, by sampled pages affected.
RecommendationPagesEst. saving
WebMCP tools registered 187/187 —
WebMCP form coverage 187/187 —
WebMCP schemas are valid 187/187 —
llms.txt follows recommendations 187/187 —
Cumulative Layout Shift 22/187 —

What the Agentic score means

The Agentic (AI-readiness) score is new in Google Lighthouse (13.4+). It measures how well a page works for AI agents and assistants — the tools that increasingly mediate how people find and use government services. It checks for things like an llms.txt file (a machine-readable guide for language models), valid structured data, a well-formed accessibility tree that agents can parse, and WebMCP tool/form descriptions. A higher score means an AI assistant is more likely to understand the page and complete tasks on a citizen's behalf correctly.

It is experimental and evolving; treat it as a forward-looking signal, not a compliance requirement. Median across sampled pages: 100/100.

Gaps found on the sampled pages: WebMCP tools registered (187), WebMCP form coverage (187), WebMCP schemas are valid (187), llms.txt follows recommendations (187), Cumulative Layout Shift (22).

Per-page results

Lighthouse scores and Core Web Vitals per sampled page (2026-W38). Agentic = experimental agentic-browsing score. PWA / offline readiness is tracked in the Standards tab (Lighthouse 12+ removed the PWA category). — click a column heading to sort
/basics/forms-publications-mailings/mailings/signing-up/welcome-to-medicare-package3310054100753.2s5.2s4.1s1.8s0.251
/account/create-account381005492945.6s12.0s5.6s0.8s0.107
/coverage/alcohol-misuse-screenings-counseling40100549210011.1s21.4s11.1s0.6s0
/health-apps/welldoc461005610010011.4s20.6s11.4s0.4s0
/index.php/about-us/accessibility-nondiscrimination-notice5410054921003.6s4.1s5.0s1.1s0.001
/prescription-payment-plan/will-this-help-me4010054921009.0s20.4s9.0s0.7s0
/publications/search4510056921003.6s5.6s3.7s1.5s0.001
/health-drug-plans/part-d/basics/choose-coverage5910054851002.4s4.4s3.7s1.0s0.004
/health-drug-plans/health-plans/your-health-plan-options/PFFS4110054921008.1s19.8s8.1s0.7s0
/providers-services/claims-appeals-complaints/appeals/original-medicare/appeal-part-a-hospital-status-change6010054921002.4s4.4s3.6s0.9s0.004
/index.php/publications32100541001008.7s19.2s8.7s1.3s0
/publications/search/item/11237136100569210011.2s20.5s11.2s0.8s0
/coverage/crutches47100569210011.5s15.4s11.5s0.4s0
/account/create-account49100549210011.9s22.1s11.9s0.3s0
/basics/get-started-with-medicare/using-medicare291005410010012.6s26.1s12.6s1.7s0
/health-apps/slothwise51100541001003.3s4.0s4.6s1.8s0.001
/basics/forms-publications-mailings/mailings/help-with-costs/eligibility-help-with-costs-May5010054921009.4s18.1s9.4s0.3s0
/coverage/emergency-department-services6210054921003.2s3.6s4.7s0.9s0.001
/providers-services/original-medicare/part-a41100561001008.1s16.9s8.1s0.6s0
/index.php/about-us/other-languages43100569210011.2s20.9s11.2s0.5s0
/publication-ordering/11359-S45100569210010.9s19.6s10.9s0.4s0
/index.php/about-us/other-languages4210054921007.0s15.5s7.0s0.7s0
/publication-ordering/119315110056921009.0s20.0s9.0s0.3s0
/health-drug-plans/medigap/basics/compare-plan-benefits/massachusetts371005492918.9s19.8s8.9s0.6s0.131
/publication-ordering/11376-S5110054921009.9s18.3s9.9s0.3s0
/index.php/health-drug-plans37100541001007.8s17.9s7.8s0.9s0
/publication-ordering/1140945100549210010.1s20.0s10.1s0.4s0
/coverage/welcome-to-medicare-preventive-visit5210054921008.9s19.6s8.9s0.2s0
/basics/forms-publications-mailings/mailings/signing-up/welcome-to-medicare-package5410054100822.5s3.0s3.7s1.6s0.195
/plan-compare34100691001008.2s13.9s8.2s1.1s0.013
/providers-services/claims-appeals-complaints/appeals/original-medicare5010054851008.2s18.4s8.2s0.3s0
/coverage/skilled-nursing-facility-snf-care6410054921002.9s3.1s5.3s0.9s0.011
/basics/costs/medicare-costs/avoid-penalties4410054921009.6s14.9s9.6s0.5s0.03
/basics/forms-publications-mailings/mailings/costs-and-coverage/upcoming-plan-changes48100569210010.5s18.1s10.5s0.3s0.001
/publication-ordering/11575-S4810056921003.6s4.4s4.5s1.8s0.001
/health-drug-plans/part-d/using-drug-coverage/drugs-disaster-emergency339756851004.8s5.1s10.6s8.5s0.019
/prescription-payment-plan/using-payment-option52100568510011.2s18.5s11.2s0.2s0
/publication-ordering/12200-S6110054921002.4s3.5s4.5s1.3s0.001
/coverage/pre-exposure-prophylaxis-prep-for-hiv-prevention5410054921008.1s18.4s8.1s0.2s0
/basics/forms-publications-mailings/mailings49100541001003.3s5.6s4.7s0.9s0.003
/my/account-settings/get-my-medicare-card28100509210018.2s29.5s18.2s1.8s0
/health-drug-plans/part-d/what-drug-plans-cover33100549210010.6s15.9s10.6s1.1s0
/coverage4010054921009.5s20.8s9.5s0.6s0
/coverage/cardiac-rehabilitation-programs5810054921002.4s4.7s3.9s0.8s0.001
/account/login281005092936.1s9.6s6.1s2.3s0.117
/health-drug-plans/medigap/basics/compare-plan-benefits/minnesota5110054921008.8s19.7s8.8s0.3s0
/health-drug-plans/health-plans/your-health-plan-options/PPO6210054921002.5s3.0s3.6s1.8s0.001
/my/eMSN2310050929311.9s16.2s11.9s2.9s0.117
/publication-ordering/115755210054921003.7s4.7s5.2s0.8s0.001
/publication-ordering/10050-K349754921004.2s5.4s8.0s5.0s0.019
/coverage/air-fluidized-beds5710054921002.5s3.6s3.8s1.9s0.006
/prescription-payment-plan/examples4710054921008.6s17.8s8.6s0.4s0
/publication-ordering/11294-S419754921004.1s4.2s8.2s4.3s0.021
/coverage/commode-chairs4810054921009.0s19.5s9.0s0.3s0
/account/login3510050921005.5s7.4s5.5s2.0s0.021
/basics/forms-publications-mailings/mailings/help-with-costs/extra-help-auto-enrollment-future-coverage49100569210011.4s20.6s11.4s0.3s0
/medical-equipment-suppliers/access-the-data379673100874.9s6.9s4.9s0.9s0.161
/coverage/cognitive-assessment-care-plan-services449756921003.6s4.1s7.5s2.0s0.022
/publication-ordering/101105210056921008.8s19.0s8.8s0.3s0
/care-compare3710073921003.8s20.1s5.1s1.7s0.005
/account/login3910050921005.6s8.3s5.6s1.0s0.021
/coverage/physical-therapy-services3710054921008.9s21.0s8.9s0.8s0
/basics/forms-publications-mailings/mailings/help-with-costs/eligibility-help-with-costs-May5110054921003.3s4.2s3.9s1.9s0.005
/publication-ordering/1157545100569210010.9s15.6s10.9s0.4s0
/health-drug-plans/health-plans/your-coverage-options/MSA/Examples37100569210011.8s21.7s11.8s0.8s0
/basics/costs/pay-premiums4710054921009.4s21.6s9.4s0.4s0
/prescription-payment-plan/using-payment-option5110054851009.9s18.2s9.9s0.2s0
/about-us/using-this-site471005410010010.3s17.8s10.3s0.4s0
/coverage/bone-mass-measurements3610050921008.9s19.0s8.9s0.9s0
/account/login3110050921005.7s8.7s6.0s3.2s0.021
/health-drug-plans/part-d/what-drug-plans-cover/plan-rules3510074851009.0s16.9s9.0s1.0s0
/providers-services/coordinating-care/accountable-care-organizations-ACOs3410056859211.3s16.4s11.3s0.7s0.126
/coverage/bone-mass-measurements3810056921009.4s16.4s9.4s0.8s0
/coverage/radiation-therapy3410054921008.7s21.1s8.7s1.1s0
/coverage/community-health-integration-services5210054921008.2s17.2s8.2s0.3s0
/publication-ordering/11579-S39100569210011.1s21.3s11.1s0.7s0
/account/login3910050921005.6s8.0s5.6s1.1s0.021
/publication-ordering/11610-S4310054921008.5s19.0s8.5s0.6s0
/health-drug-plans/health-plans/your-coverage-options/MSA/work-with-other-coverage51100569210011.3s19.0s11.3s0.2s0.001
/coverage/diabetes-screenings5310054921002.5s4.2s3.9s1.9s0.05
/providers-services/original-medicare/skilled-nursing3610054851009.9s20.5s9.9s0.8s0
/publication-ordering/0215451100549210010.3s19.4s10.3s0.3s0
/publication-ordering/1011151100569210011.0s20.0s11.0s0.2s0
/publication-ordering/10050-C5510056921008.8s18.4s8.8s0.2s0
/index.php/about-us/using-this-site55100561001003.9s4.3s5.2s0.7s0
/account/login38100509210011.7s22.3s11.7s0.7s0
/coverage/pneumococcal-vaccines3610054921008.1s20.2s8.1s1.0s0
/health-drug-plans/medigap/ready-to-buy/how3910054921008.1s19.6s8.1s0.7s0
/index.php/talk-to-someone43100541001003.8s4.7s5.9s2.0s0.016
/providers-services/claims-appeals-complaints4310056921008.9s18.1s8.9s0.5s0
/basics/costs/pay-premiums/online-bill-pay4210054100943.7s4.6s5.0s2.2s0.105
/publication-ordering/11163-S5010054921008.5s18.5s8.5s0.3s0
/account/login2910050921009.4s17.6s9.4s1.8s0
/providers-services/claims-appeals-complaints/complaints339754851004.5s5.4s9.0s5.5s0.019
/coverage/x-rays6110054921002.5s3.2s3.7s1.9s0.008
/account/login3410050921005.6s7.8s5.6s1.9s0.031
/publication-ordering/02179-S5210056921003.7s4.2s4.3s1.4s0.001
/coverage/chiropractic-services3310054921008.1s18.3s8.1s1.3s0
/coverage/gym-memberships-fitness-programs399754921008.8s19.4s8.8s0.7s0.021
/providers-services/claims-appeals-complaints/claims/share-your-medicare-claims/connected-apps3197541001004.1s6.6s8.4s4.4s0.027
/coverage/diabetes-self-management-training481005492963.3s4.1s4.1s2.0s0.094
/my/eMSN30100509210012.5s16.2s12.5s1.4s0.021
/publication-ordering/115794410054921008.6s18.1s8.6s0.5s0
/publication-ordering/11294-S299756921005.7s6.0s10.5s6.7s0.019
/publication-ordering/11441-S42100549210010.0s20.4s10.0s0.6s0
/coverage/continuous-glucose-monitors381005492843.2s5.0s4.5s2.0s0.177
/care-compare4810073928613.8s19.3s13.8s0.1s0.164
/basics/reporting-medicare-fraud-and-abuse3910074921004.7s6.7s5.0s1.4s0.005
/coverage/osteoporosis-drugs3810056921009.1s21.2s9.1s0.7s0
/publication-ordering/112224410073921004.2s4.4s4.5s4.7s0.001
/my/maintenance31100509210017.1s27.0s17.1s1.3s0.021
/publication-ordering/1122050100569210011.0s19.0s11.0s0.3s0
/health-drug-plans/health-plans/your-coverage-options/MSA/work-with-other-coverage5510054921003.3s3.7s4.0s1.5s0.001
/publication-ordering/11046-S50100569210011.0s19.1s11.0s0.3s0
/coverage/mammograms3610050921008.9s19.9s8.9s0.9s0
/health-drug-plans/medigap/basics/compare-plan-benefits291005492908.1s17.5s8.1s1.1s0.134
/coverage/crutches601005492913.3s3.8s4.0s0.6s0.127
/coverage/principal-care-management-services3710054921008.3s19.4s8.3s0.9s0
/my/premiums/dashboard1610050928112.2s18.3s12.2s3.5s0.202
/account/login33100529210013.1s18.9s13.1s1.0s0.021
/publication-ordering/10050-ED4310056921008.8s18.2s8.8s0.6s0
/publication-ordering/1154649100569210011.2s21.3s11.2s0.3s0
/index.php/publications50100541001009.7s19.6s9.7s0.3s0
/account/login3210050921006.1s8.6s6.1s2.0s0.027
/coverage/long-term-care3810056921009.3s19.3s9.3s0.7s0
/about-us/accessibility-nondiscrimination-notice3710056921009.1s16.7s9.1s0.8s0
/publication-ordering/101844510054921003.2s4.9s4.8s1.9s0.001
/health-apps/healthex37100561001008.9s20.9s8.9s0.8s0
/basics/costs/help/medicaid5110056921009.2s15.6s9.2s0.3s0
/basics/costs/medicare-costs/provider-accept-Medicare3697549210013.4s23.2s13.4s0.8s0.027
/publication-ordering/114094210054921006.6s15.6s6.6s0.7s0
/health-drug-plans/medigap/basics/how-medigap-works42100561001009.1s19.4s9.1s0.6s0.047
/providers-services/claims-appeals-complaints/claims/check-status3610050851007.9s19.6s7.9s1.0s0
/basics/forms-publications-mailings/mailings/costs-and-coverage/evidence-of-coverage7210054921002.5s2.8s3.7s0.8s0.003
/care-compare/resources/nursing-home/quality-of-resident-care2710092921008.1s13.5s8.1s5.1s0
/publications/search/all-non-english-pubs539954921002.6s4.4s4.1s1.6s0.001
/basics/get-started-with-medicare/after-6545100561001003.6s4.4s5.1s3.2s0.001
/care-compare3010074921004.5s24.7s6.8s3.9s0.018
/publication-ordering/02174-S3910056921004.1s5.9s5.6s1.7s0.001
/basics/forms-publications-mailings/mailings/other42100541001004.7s16.2s5.4s0.9s0
/account/login331005092935.6s7.9s5.6s1.3s0.117
/publication-ordering/10153-S5210054921009.3s19.5s9.3s0.2s0
/sitemap361005492623.2s4.1s4.1s1.1s0.423
/publication-ordering/101164210054921008.4s18.5s8.4s0.6s0
/coverage/orthopedic-shoes46100549210010.3s18.9s10.3s0.4s0.001
/publication-ordering/10116-S4810054921003.2s5.0s4.6s1.4s0.001
/account/login29100509210012.0s20.9s12.0s1.5s0
/care-compare3710074921004.0s19.7s4.6s1.7s0.019
/about-us/contact-medicare4910056100993.6s4.0s4.3s2.1s0.067
/publication-ordering/12085279752921008.9s19.7s10.6s2.6s0.019
/basics/forms-publications-mailings/mailings/help-with-costs/reminder-join-drug-plan41100549210010.3s18.0s10.3s0.6s0.003
/coverage/principal-care-management-services4910056921009.2s19.0s9.2s0.3s0
/about-us/using-this-site501005610010011.7s16.7s11.7s0.3s0
/providers-services/claims-appeals-complaints/claims6310054851002.5s3.5s3.6s1.1s0.049
/coverage/mental-health-care-outpatient-partial-hospitalization4310054921008.1s17.2s8.1s0.5s0
/coverage/kidney-transplants5010054921008.2s16.5s8.2s0.3s0
/my/account-settings310050925513.7s24.5s13.7s3.0s0.647
/coverage/prescription-drugs-outpatient4010056921009.2s20.8s9.2s0.7s0
/publication-ordering/11441-S41100569210011.1s21.2s11.1s0.6s0
/coverage/infusion-pumps-supplies27975492814.2s4.6s9.6s4.9s0.203
/publication-ordering/11417-S52100569210011.1s15.7s11.1s0.2s0
/basics/forms-publications-mailings/mailings/costs-and-coverage/change-in-social-security-payment39100541001008.6s18.4s8.6s0.7s0.001
/coverage/popular-topics49100569210012.6s20.8s12.6s0.3s0.001
/basics/costs/medicare-costs/avoid-penalties6010054921003.3s3.3s3.5s1.5s0.019
/publication-ordering/11472-S4210056921008.8s20.9s8.8s0.6s0
/publication-ordering/10111-S5410056921008.9s18.2s8.9s0.2s0
/health-drug-plans/medigap/ready-to-buy/how/illegal-practices299756921009.2s19.9s10.7s1.6s0.019
/coverage/oxygen-equipment-accessories37100569210011.5s20.4s11.5s0.8s0
/basics/costs/medicare-costs/provider-accept-Medicare43100569210011.5s21.2s11.5s0.5s0
/publications/search5310054921008.8s18.1s8.8s0.2s0
/health-apps/january.ai531005410010010.2s21.4s10.2s0.2s0
/coverage/foot-care-other4610054921008.2s20.5s8.2s0.4s0
/account/login301005092935.7s7.5s5.7s2.1s0.118
/basics/costs/help/medicare-lower-costs511005492772.5s2.9s3.9s2.0s0.233
/coverage/advanced-primary-care-management-services4210056921009.3s19.0s9.3s0.6s0
/basics41100541001008.5s17.3s8.5s0.6s0
/providers-services/original-medicare3297541001008.1s19.6s9.6s1.3s0.019
/basics/get-started-with-medicare/using-medicare/how-to-get-medicare-services31100549210011.3s27.3s11.3s1.2s0
/basics/reporting-medicare-fraud-and-abuse37100549210010.1s25.4s10.1s0.8s0
/coverage/continuous-glucose-monitors301005492848.8s19.0s8.8s0.7s0.177
/index.php/sitemap4210054921008.6s20.8s8.6s0.6s0
/go-digital3410050921008.9s21.1s8.9s1.1s0
/basics/forms-publications-mailings/mailings/help-with-costs/eligibility-help-with-costs-November5310054921003.2s4.1s4.1s1.5s0.001
/publication-ordering/113603610054921008.4s18.3s8.4s0.9s0
/coverage/blood-services47100569210010.7s19.1s10.7s0.4s0
/publication-ordering/11358-S5110054921003.3s4.1s4.5s1.7s0.001
/my/account-settings210050925313.1s19.7s13.1s3.4s0.79