vital-scans open quality ledger

data.cms.gov: Lighthouse — week 2026-W39

258 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-W24469610092
2026-W25499510092
2026-W26479510092
2026-W27479510092
2026-W28479510092
2026-W29479510092
2026-W30459510092
2026-W31459510092
2026-W32479510092
2026-W33459510092
2026-W34499510092
2026-W35489510092
2026-W36489510092
2026-W37499510092
2026-W38499510092
2026-W39489510092
2026-W40499810092

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
9.5s 216/216 pages over
Avg extra weight over 1.6 MB
3.49 MB 253/276 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
48/100
Accessibility
95/100
Best practices
100/100
SEO
92/100
Agentic browsing
50/100
Largest Contentful Paint
10.3s
First Contentful Paint
3.4s
Speed Index
4.2s
Total Blocking Time
0.7s
Cumulative Layout Shift
0

Recommendations

Issues Lighthouse flagged across the 258 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
Reduce unused JavaScript 216/258 187.8 MB · 845.5s
Render-blocking requests 216/258 227.7s
Reduce unused CSS 216/258 21.3 MB · 114.0s
First Contentful Paint 216/258 —
Largest Contentful Paint 216/258 —
Time to Interactive 216/258 —
Page prevented back/forward cache restoration 216/258 —
Network dependency tree 215/258 —
Minimize main-thread work 210/258 186.3s
Reduce JavaScript execution time 210/258 174.2s
Max Potential First Input Delay 203/258 —
Total Blocking Time 202/258 —
Speed Index 195/258 —
Use efficient cache lifetimes 180/258 46.9s
Font display 149/258 15.6s
Legacy JavaScript 87/258 12.9s
Forced reflow 66/258 —
Layout shift culprits 48/258 —
LCP request discovery 39/258 —
Initial server response time was short 36/258 3.3s
Improve image delivery 10/258 1.4s
LCP breakdown 10/258 —
Duplicated JavaScript 3/258 0.6s
Avoid multiple page redirects 1/258 1.1s
Document request latency 1/258 0.1s

Best Practices

Best Practices recommendations from Lighthouse, by sampled pages affected.
RecommendationPagesEst. saving
Browser errors were logged to the console 72/258 —
Missing source maps for large first-party JavaScript 68/258 —
Uses third-party cookies 20/258 —
Issues were logged in the `Issues` panel in Chrome Devtools 20/258 —

SEO

SEO recommendations from Lighthouse, by sampled pages affected.
RecommendationPagesEst. saving
Document does not have a meta description 156/258 —
Links are not crawlable 146/258 —
Page is blocked from indexing 82/258 —
Links do not have descriptive text 4/258 —

Agentic (AI-readiness)

Agentic (AI-readiness) recommendations from Lighthouse, by sampled pages affected.
RecommendationPagesEst. saving
WebMCP tools registered 216/258 —
WebMCP form coverage 216/258 —
WebMCP schemas are valid 216/258 —
llms.txt follows recommendations 216/258 —
Accessibility tree is not well-formed 132/258 —
Cumulative Layout Shift 48/258 —

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: 50/100.

Gaps found on the sampled pages: WebMCP tools registered (216), WebMCP form coverage (216), WebMCP schemas are valid (216), llms.txt follows recommendations (216), Accessibility tree is not well-formed (132), Cumulative Layout Shift (48).

Per-page results

Lighthouse scores and Core Web Vitals per sampled page (2026-W39). 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
/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-change-of-ownership/data/q4-2024509510054503.3s10.2s3.5s0.7s0
/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-telehealth-trends/api-docs539010092503.3s9.2s3.3s0.6s0.024
/provider-data/datasets549696835017.2s20.2s17.2s0.1s0
/medicare-shared-savings-program/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries/data/2023489510054503.3s8.7s3.5s0.9s0
/provider-data/dataset/3xeb-u9wpn/an/an/an/an/an/an/an/an/an/a
/resources/minimum-data-set-frequency-methodology54100100921003.3s9.7s3.8s0.5s0
/quality-of-care/payroll-based-journal-employee-detail-nursing-home-staffing/data/q3-2024539510054503.3s10.2s3.6s0.6s0
/provider-data/dataset/eda0-92f0189796926414.7s16.5s14.7s0.8s0.384
/resources/medicare-part-d-prescribers-by-provider-and-drug-data-dictionary43937792503.3s9.8s4.1s1.2s0
/provider-summary-by-type-of-service/medicare-inpatient-hospitals/hospital-service-area/data/2021519510054503.3s10.3s3.8s0.7s0
/provider-data/dataset/d2k3-k3ac119796926113.4s16.5s13.4s1.3s0.425
/provider-data/dataset/84jm-wiui3397969210015.6s16.8s15.6s1.0s0
/provider-data/dataset/ptds-r8im4397969210016.4s17.8s16.4s0.5s0
/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-skilled-nursing-facility-by-geography-provider-and-service/data/2022549510054503.5s10.0s4.0s0.5s0
/summary-statistics-on-use-and-payments/medicare-geographic-comparisons/medicare-advantage-geographic-variation-national-state/data549510054503.3s10.5s3.3s0.6s0
/provider-data/dataset/ypbt-wvdk169796926214.7s16.6s14.7s0.9s0.406
/provider-characteristics/hospitals-and-other-facilities/medicare-clinical-laboratory-fee-schedule-private-payer-rates-and-volumes/api-docs549510092503.3s8.6s3.3s0.6s0
/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-change-of-ownership-owner-information/data499510054503.3s10.4s3.7s0.8s0
/provider-data/dataset/0b1a-da3f349796925915.5s16.5s15.5s0.0s0.482
/provider-data/archived-data/nursing-homes34100969210013.4s16.7s13.4s0.9s0.005
/medicare-shared-savings-program/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries/data/2023-oc145100100541003.3s10.5s3.6s1.0s0
/provider-data/topics/hospitals/overall-hospital-quality-star-rating32100969210012.8s17.2s12.8s1.1s0
/provider-data/datasets259673925016.6s18.1s16.6s4.8s0
/provider-characteristics/hospitals-and-other-facilities/hospital-price-transparency-enforcement-activities-and-outcomes/data539510054503.3s8.7s4.1s0.6s0.001
/provider-characteristics/hospitals-and-other-facilities/rural-health-clinic-all-owners428710092503.3s12.0s4.9s1.2s0
/provider-data/dataset/dgck-syfz109796925812.9s16.5s12.9s1.3s0.508
/tools/medicaid-managed-care-dashboard44927792503.3s9.2s4.7s1.0s0
/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/data/august-7-2026599510054503.3s10.0s3.6s0.4s0.002
/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-geography-and-drug/api-docs619010092503.3s8.7s3.3s0.3s0
/provider-characteristics/hospitals-and-other-facilities/hospital-all-owners/data/april-202641957754503.3s9.3s4.0s1.5s0.003
/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-referring-provider/data549510054503.3s9.6s3.5s0.5s0.002
/provider-data/dataset/covid-19_hcp109796926515.1s16.6s15.1s1.7s0.366
/provider-data/dataset/nhsn_de269796926115.5s16.5s15.5s0.4s0.424
/provider-summary-by-type-of-service/medicare-part-d-prescribers52100100921003.3s9.4s3.3s0.6s0
/quality-of-care/medicare-dialysis-facilities/api-docs589510092505.3s6.8s5.3s0.3s0
/provider-data/datasets179396831613.5s16.8s13.5s0.9s0.346
/provider-data/dataset/m5eg-upu5n/an/an/an/an/an/an/an/an/an/a
/summary-statistics-on-use-and-payments/physiciansupplier-procedure-summary559110092503.3s10.4s3.9s0.5s0
/quality-of-care/facility-level-minimum-data-set-frequency/data/q2-2025599510054503.4s9.1s4.1s0.3s0.002
/provider-data/dataset/wkfw-kthen/an/an/an/an/an/an/an/an/an/a
/provider-data/datasetsn/an/an/an/an/an/an/an/an/an/a
/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-all-owners/data/february-202641957754503.3s9.8s4.4s1.3s0
/provider-data/archived-data/doctors-clinicians55100969210015.6s16.6s15.6s0.0s0
/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-physicians/data/june-2-2026479510054503.3s10.3s3.7s0.9s0
/provider-characteristics/medicare-provider-supplier-enrollment/revoked-medicare-providers-and-suppliers49917792503.3s12.7s4.3s0.7s0
/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-non-physicians/api-docs559510092503.3s9.6s3.3s0.5s0
/quality-of-care/medicare-dialysis-facilities/data/2021409510054503.3s9.9s4.5s1.5s0
/resources/nursing-home-chain-performance-measures-data-dictionary529610092503.3s9.8s3.9s0.6s0
/provider-data/search389696921616.9s18.5s16.9s0.1s0.346
/provider-data/dataset/0ba7-2cb0169796926114.7s16.5s14.7s0.8s0.443
/provider-data/datasets379696831617.1s18.6s17.1s0.1s0.346
/datasets55939683503.3s7.9s3.3s0.5s0.004
/provider-data/dataset/n0yb-util59796925714.9s16.7s14.9s2.7s0.535
/provider-data/dataset/075a-d487n/an/an/an/an/an/an/an/an/an/a
/provider-data/dataset/qip_ich_cahps89796925715.0s16.8s15.0s1.5s0.541
/resources/hospital-service-area-methodology519610092503.4s9.7s3.9s0.7s0
/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/data/june-23-202649100100541003.3s10.7s3.7s0.7s0
/provider-data/dataset/f4ga-b9gx5597969210018.1s19.5s18.1s0.0s0
/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-physicians/data/july-28-2026599510054503.4s10.1s4.5s0.3s0.001
/provider-data/topics/dialysis-facilities/dialysis-facilities-quality-of-patient-care-rating55100969210015.5s17.2s15.5s0.1s0
/provider-data/dataset/qip_ich_cahpsn/an/an/an/an/an/an/an/an/an/a
/quality-of-care/facility-level-minimum-data-set-frequency/data/q4-202446957754503.3s9.8s4.2s0.9s0
/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/data/june-2-2026499510054503.3s9.6s3.8s0.8s0.002
/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-provider-and-drug/data54100100541003.4s8.0s3.4s0.6s0.005
/resources/nursing-home-chain-performance-measures-methodology549410092503.4s9.6s4.3s0.5s0
/provider-data/dataset/7t8x-u3irn/an/an/an/an/an/an/an/an/an/a
/provider-data/dataset/0127-af37n/an/an/an/an/an/an/an/an/an/a
/provider-data/dataset/0127-af37n/an/an/an/an/an/an/an/an/an/a
/provider-data/dataset/ijh5-nb2v99796925914.7s17.2s14.7s1.4s0.488
/resources/medicare-monthly-enrollment-methodology41937792503.3s9.7s4.5s1.4s0
/provider-data/topics/hospitals/complications-deathsn/an/an/an/an/an/an/an/an/an/a
/resources/medicare-fee-for-service-comprehensive-error-rate-testing-improper-payment-data-dictionary519610092503.4s9.7s3.8s0.6s0
/cms-innovation-center-programs/disease-episode-based-payment-models/managing-clinician-aggregation-group-performance578710092503.3s11.7s3.8s0.4s0
/tools589310092503.4s6.6s3.4s0.5s0
/summary-statistics-on-beneficiary-enrollment/medicare-and-medicaid-reports529610092503.3s9.4s3.5s0.6s0
/provider-data/dataset/hicp-99994597969210016.2s17.4s16.2s0.4s0
/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-referring-provider-and-service/data/2018579510054503.4s9.7s3.9s0.4s0
/provider-data/dataset/a174-a962n/an/an/an/an/an/an/an/an/an/a
/provider-data/dataset/ct36-nrcq239796926415.8s16.8s15.8s0.6s0.376
/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/data/july-17-20264210077541003.3s10.5s4.2s1.4s0.004
/provider-data/dataset/axe7-s95e119796926313.6s16.7s13.6s1.5s0.397
/medicare-value-based-payment-modifier-program/value-modifier/data/2015509510054503.3s10.2s4.1s0.7s0
/provider-data/dataset/a174-a962n/an/an/an/an/an/an/an/an/an/a
/provider-data/dataset/djen-97ju89796926013.6s16.6s13.6s1.8s0.45
/resources/medicare-pac-utilization-ltch-by-geography-and-provider-data-dictionary449610092503.3s9.7s7.2s0.7s0
/quality-of-care/payroll-based-journal-employee-detail-nursing-home-staffing/data/q2-202553100100541003.4s9.0s4.2s0.5s0
/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-all-owners/data/december-2025559510054503.3s10.5s3.4s0.5s0
/provider-summary-by-type-of-service/medicare-outpatient-hospitals/medicare-outpatient-hospitals-by-provider-and-service/data47100100541003.4s10.0s4.2s0.8s0
/summary-statistics-on-beneficiary-enrollment/medicare-and-medicaid-reports/cms-program-statistics-medicare-part-d-enrollment508710092503.3s10.2s4.4s0.7s0
/provider-data/dataset/6pfg-whmx4197969210015.6s16.5s15.6s0.6s0
/provider-summary-by-type-of-service/medicare-part-d-prescribers/quarterly-prescription-drug-plan-formulary-pharmacy-network-and-pricing-information598810092503.3s9.3s3.8s0.4s0
/provider-data/dataset/clinical_depression79796926215.0s16.9s15.0s2.6s0.414
/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-home-health-agency-by-geography-and-provider/data/2023489510054503.4s9.7s3.8s0.8s0
/summary-statistics-on-beneficiary-enrollment/health-insurance-marketplace/health-insurance-exchanges-annual-effectuated-enrollment478710092503.4s12.6s4.6s0.8s0
/provider-data/datasets389696921617.2s20.2s17.2s0.1s0.346
/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners/data/q2-202548100100541003.3s10.3s3.5s0.8s0
/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-geography-and-drug/data/2020499510054503.3s9.2s3.4s0.8s0.003
/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-provider/data/2019469510054503.4s9.9s3.9s0.9s0
/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-short-stay-hospital-discharge-rankings479110092503.3s12.3s3.9s0.9s0
/provider-characteristics/medicare-provider-supplier-enrollment/fiscal-intermediary-shared-system-attending-and-rendering/data/august-28-2026519510054503.3s10.5s4.4s0.6s0
/provider-data/dataset/2fpu-cgbb109796926314.7s16.7s14.7s1.6s0.403
/provider-characteristics/medicare-provider-supplier-enrollment/home-infusion-therapy-providers/data/june-30-2026519510054503.4s9.7s4.5s0.6s0
/provider-data/topics/physician-office-visit-costs5597969210015.6s19.2s15.6s0.1s0
/medicare-shared-savings-program/advance-investment-payment-spend-plan/data519510054503.4s9.3s4.3s0.6s0.001
/provider-data/dataset/fykj-qjeen/an/an/an/an/an/an/an/an/an/a
/provider-characteristics/hospitals-and-other-facilities/provider-of-services-file-quality-improvement-and-evaluation-system48877792503.3s14.7s4.9s0.7s0
/provider-data/dataset/hbf-map129796926414.7s16.7s14.7s1.3s0.376
/provider-data/dataset/qatj-nmws119796925713.6s14.6s13.6s1.1s0.52
/cms-innovation-center-programs/disease-episode-based-payment-models/managing-clinician-aggregation-group-performance/api-docs549010092493.4s8.8s3.4s0.5s0.06
/provider-characteristics/medicare-provider-supplier-enrollment/revalidation-clinic-group-practice-reassignment/data/august-2026499510054503.4s10.2s3.9s0.7s0
/cms-innovation-center-programs/healthcare-support-models/strong-start-awardees/data489510054503.4s10.3s3.8s0.8s0
/provider-data/dataset/avtz-f2gen/an/an/an/an/an/an/an/an/an/a
/provider-data/dataset/4gkm-5ypv129796926213.4s16.5s13.4s1.3s0.413
/provider-data/dataset/0127-af37309796926514.7s16.5s14.7s0.3s0.358
/provider-data/dataset/075a-d487269796926215.0s16.7s15.0s0.4s0.406
/resources/number-of-accountable-care-organization-assigned-beneficiaries-by-county-data-dictionary-2022509510092503.3s9.9s4.1s0.7s0
/medicare-shared-savings-program/accountable-care-organization-participants/api-docs549010092503.4s8.7s3.4s0.6s0.043
/cms-innovation-center-programs/accountable-care-models/aco-reach-aligned-beneficiaries/data/2022479510054503.4s10.9s4.3s0.8s0
/resources/deficit-reduction-act-dra-hospital-acquired-condition-hac-measures-methodology-2015-2024609010092503.3s9.5s3.6s0.3s0
/provider-data/dataset/8c70-d3534297969210015.5s16.5s15.5s0.5s0
/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-home-health-agency-by-geography-and-provider/api-docs569510092503.3s8.8s3.3s0.5s0.014
/provider-compliance/cost-reports/hospital-provider-cost-report/data/201945100100541003.3s10.4s3.7s1.0s0
/provider-data/dataset/wkfw-kthe189796926315.5s16.8s15.5s0.8s0.395
/provider-data/dataset/zez1-ka2w109796926213.4s16.4s13.4s1.6s0.416
/datasets569896921003.4s7.0s3.4s0.5s0.004
/medicare-shared-savings-program/accountable-care-organizations/data/202147100100541003.4s10.6s3.6s0.9s0
/provider-data/topics/hospitals3497968310013.9s17.4s13.9s0.9s0.019
/provider-data/dataset/yc9t-dgbk89796926312.5s14.0s12.5s2.4s0.389
/cms-innovation-center-programs/disease-episode-based-payment-models/end-stage-renal-disease-facility-aggregation-group-performance/data/june-2024479510054503.4s11.0s4.2s0.8s0
/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-long-term-care-hospital-by-geography-and-provider/data/2022479510054503.3s9.3s3.5s0.9s0.001
/provider-data/dataset/svdt-c123n/an/an/an/an/an/an/an/an/an/a
/provider-data/dataset/nrdb-3fcy79796926314.9s16.7s14.9s3.5s0.402
/provider-characteristics/medicare-provider-supplier-enrollment/revalidation-due-date-list/data47957754503.5s9.6s4.2s0.8s0
/resources/income-and-asset-ownership-data-dictionary-2021529010092503.3s9.6s4.0s0.6s0
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