vital-scans open quality ledger

data.cms.gov: Lighthouse — week 2026-W38

269 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
10.2s 247/247 pages over
Avg extra weight over 1.6 MB
3.15 MB 250/276 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
49/100
Accessibility
95/100
Best practices
100/100
SEO
92/100
Agentic browsing
50/100
Largest Contentful Paint
10.6s
First Contentful Paint
3.4s
Speed Index
4.2s
Total Blocking Time
0.7s
Cumulative Layout Shift
0.001

Recommendations

Issues Lighthouse flagged across the 269 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 247/269 225.0 MB · 1034.5s
Render-blocking requests 247/269 306.6s
Reduce unused CSS 247/269 25.3 MB · 136.3s
First Contentful Paint 247/269 —
Largest Contentful Paint 247/269 —
Time to Interactive 247/269 —
Page prevented back/forward cache restoration 247/269 —
Network dependency tree 247/269 —
Minimizes main-thread work 246/269 187.2s
JavaScript execution time 246/269 173.1s
Use efficient cache lifetimes 229/269 62.6s
Speed Index 226/269 —
Total Blocking Time 222/269 —
Max Potential First Input Delay 219/269 —
Font display 159/269 14.3s
Legacy JavaScript 91/269 13.7s
Layout shift culprits 80/269 —
Forced reflow 60/269 —
LCP request discovery 45/269 —
Reduce initial server response time 28/269 3.2s
Improve image delivery 19/269 2.9s
LCP breakdown 4/269 —
Document request latency 3/269 1.7s
Avoid multiple page redirects 2/269 1.9s
Duplicated JavaScript 1/269 0.1s

Best Practices

Best Practices recommendations from Lighthouse, by sampled pages affected.
RecommendationPagesEst. saving
Browser errors were logged to the console 98/269 —
Missing source maps for large first-party JavaScript 93/269 —
Uses third-party cookies 21/269 —
Issues were logged in the `Issues` panel in Chrome Devtools 21/269 —

SEO

SEO recommendations from Lighthouse, by sampled pages affected.
RecommendationPagesEst. saving
Document does not have a meta description 179/269 —
Links are not crawlable 155/269 —
Page is blocked from indexing 81/269 —
Links do not have descriptive text 5/269 —

Agentic (AI-readiness)

Agentic (AI-readiness) recommendations from Lighthouse, by sampled pages affected.
RecommendationPagesEst. saving
WebMCP tools registered 247/269 —
WebMCP form coverage 247/269 —
WebMCP schemas are valid 247/269 —
llms.txt follows recommendations 247/269 —
Accessibility tree is not well-formed 167/269 —
Cumulative Layout Shift 80/269 —

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 (247), WebMCP form coverage (247), WebMCP schemas are valid (247), llms.txt follows recommendations (247), Accessibility tree is not well-formed (167), Cumulative Layout Shift (80).

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
/resources/number-of-accountable-care-organization-assigned-beneficiaries-by-county-data-dictionary-2023669610092503.3s9.6s3.7s0.2s0
/provider-summary-by-type-of-service/medicare-outpatient-hospitals/medicare-outpatient-hospitals-by-geography-and-service/data/2020499510054503.3s9.6s3.5s0.8s0.001
/cms-innovation-center-programs/cms-innovation-models-overview/innovation-center-model-summary-information518710092503.3s10.4s3.9s0.6s0
/provider-data/dataset/3xeb-u9wp119796926113.4s16.6s13.4s1.3s0.431
/provider-data/dataset/k653-4ka8139796925615.5s16.6s15.5s0.9s0.543
/datasets64939683503.3s7.0s3.3s0.3s0.004
/provider-data/dataset/029b-dd7e359796926315.5s16.5s15.5s0.1s0.397
/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-inpatient-rehabilitation-facility-by-geography-and-provider/data499510054503.3s9.6s3.4s0.8s0.001
/provider-data/dataset/0b1a-da3f219796926214.7s16.5s14.7s0.6s0.406
/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-physicians/data/july-24-2026509510054503.4s10.4s3.8s0.7s0.002
/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-provider-and-drug/data/2019639510054503.4s9.2s3.6s0.2s0.005
/provider-characteristics/hospitals-and-other-facilities/provider-of-services-file-internet-quality-improvement-and-evaluation-system/data/q2-2025509510054503.3s10.6s3.3s0.7s0.001
/medicare-shared-savings-program/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries/data/2023-oc1479510054503.3s10.5s3.4s0.9s0
/quality-of-care/payroll-based-journal-daily-nurse-staffing/data/q3-2025499510054503.4s9.7s3.6s0.7s0.004
/provider-data/dataset/m5jg-jg7i189796926514.7s16.6s14.7s0.9s0.358
/resources/medicare-part-b-spending-by-drug-data-dictionary649210092503.5s9.1s4.1s0.2s0
/provider-characteristics/medicare-provider-supplier-enrollment/opt-out-affidavits/data509510054503.3s8.7s3.6s0.7s0.003
/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-home-health-agency-by-geography-provider-and-service/data/2023409510054503.3s9.3s4.3s1.7s0
/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-utilization-inpatient-rehabilitation-facility-by-geography-and-provider/data/2018459510054503.3s10.6s3.5s1.1s0
/provider-data/dataset/029b-dd7e99796926312.9s16.6s12.9s2.0s0.398
/provider-data/dataset/dgck-syfz139796926414.8s16.6s14.8s1.3s0.377
/provider-data/dataset/tqkv-mgxq169796926215.5s16.8s15.5s0.8s0.421
/tools/medicaid-managed-care-dashboard36927792503.4s10.2s5.2s2.5s0
/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/data/august-7-2026559510054503.3s10.8s4.9s0.4s0
/provider-data/dataset/yizn-abxnn/an/an/an/an/an/an/an/an/an/a
/medicare-shared-savings-program/performance-year-financial-and-quality-results/data/2020419510054503.4s10.7s4.0s1.5s0
/resources/market-saturation-utilization-state-county-methodology519310092503.4s9.6s4.2s0.6s0
/provider-summary-by-type-of-service/medicare-physician-other-practitioners/medicare-physician-other-practitioners-by-geography-and-service/data499510054503.3s10.7s3.5s0.8s0
/provider-data/dataset/ynj2-r8774697969210015.6s16.5s15.6s0.4s0.034
/provider-characteristics/hospitals-and-other-facilities/hospital-all-owners/data/december-2025479510054503.4s10.9s4.2s0.9s0
/provider-data/dataset/069d-826b329796926215.5s16.5s15.5s0.2s0.406
/provider-data/topics/hospitals/about-data54100969210015.5s16.5s15.5s0.1s0
/summary-statistics-on-use-and-payments/medicare-medicaid-spending-by-drug/medicare-part-b-spending-by-drug558710092503.3s12.6s3.7s0.5s0
/provider-data/datasets379696921616.5s19.2s16.5s0.1s0.346
/provider-characteristics/medicare-provider-supplier-enrollment/fiscal-intermediary-shared-system-attending-and-rendering/data/september-1-2026529510054503.3s10.5s3.6s0.6s0
/provider-data/dataset/95rg-2usp219796926113.4s14.4s13.4s0.6s0.431
/provider-data/dataset/0b1a-da3f249796926214.8s16.6s14.8s0.5s0.407
/cms-innovation-center-programs/accountable-care-models/reach-acos598710092503.4s12.6s4.1s0.3s0
/medicare-current-beneficiary-survey-mcbs/medicare-current-beneficiary-survey-survey-file518710092503.3s12.6s4.0s0.6s0
/resources/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries-methodology599610092503.3s10.2s3.7s0.4s0.006
/provider-summary-by-type-of-service/medicare-inpatient-hospitals/hospital-service-area/data/2019629510054503.4s10.7s3.5s0.3s0
/provider-data/dataset/6pfg-whmx159796925615.5s16.5s15.5s0.7s0.559
/medicare-shared-savings-program/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries/data499510054503.3s10.2s3.6s0.8s0
/medicare-shared-savings-program/accountable-care-organization-skilled-nursing-facility-affiliates498710092503.4s10.3s4.5s0.7s0
/provider-summary-by-type-of-service/medicare-part-d-prescribers/medicare-part-d-prescribers-by-geography-and-drug/data/2021509510054503.3s9.3s3.6s0.7s0
/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-enrollments/data/january-202649957754503.3s10.0s3.5s0.8s0
/provider-data/dataset/xubh-q36u119796926314.9s16.9s14.9s1.5s0.397
/resources/medicare-inpatient-hospitals-by-provider-and-service-data-dictionary549610092503.3s10.2s4.0s0.5s0
/resources/medicare-outpatient-hospitals-by-provider-and-service-data-dictionary539610092503.3s10.2s3.9s0.5s0
/provider-data/topics/home-health-services/process-care-outcome-care-quality-measuresn/an/an/an/an/an/an/an/an/an/a
/resources/comprehensive-esrd-care-model-data-methodology519410092503.3s9.4s4.0s0.7s0
/quality-of-care/minimum-data-set-frequency548710092503.3s12.5s3.7s0.5s0
/tools/geographic-variation-in-standardized-medicare-spending-state44927792503.4s41.4s4.6s1.0s0
/provider-data/dataset/strr129796926514.7s16.6s14.7s1.4s0.365
/provider-characteristics/medicare-provider-supplier-enrollment/medicare-fee-for-service-public-provider-enrollment628710092503.3s12.3s3.6s0.3s0
/provider-data/dataset/9n3s-kdb3n/an/an/an/an/an/an/an/an/an/a
/provider-data/dataset/qoeg-w7ck119796926213.4s16.5s13.4s1.4s0.421
/provider-data/dataset/mj5m-pzi6109796926314.7s16.6s14.7s1.7s0.39
/provider-data/dataset/f4ga-b9gx289796926215.5s17.3s15.5s0.3s0.413
/provider-characteristics/hospitals-and-other-facilities/rural-health-clinic-all-owners/data/q1-2025569510054503.3s10.4s3.7s0.5s0
/provider-characteristics/hospitals-and-other-facilities/hospice-all-owners498710092503.3s11.7s4.0s0.7s0
/provider-characteristics/medicare-provider-supplier-enrollment/pending-initial-logging-and-tracking-non-physicians/data/august-4-2026429510054503.4s10.1s6.2s1.0s0
/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/data/june-2-2026519510054503.4s9.7s4.4s0.6s0
/provider-data/dataset/m5eg-upu5109796925714.7s16.7s14.7s1.2s0.52
/resources/payroll-based-journal-daily-nurse-staffing-data-dictionary529610092503.3s9.8s4.2s0.6s0
/provider-data/dataset/srr109796926413.6s16.9s13.6s1.7s0.384
/quality-of-care/long-term-care-facility-characteristics/data/q4-2025519510054503.3s10.3s3.8s0.7s0
/provider-data/dataset/rrqw-56er139796925614.7s16.7s14.7s0.9s0.549
/provider-data/topics/long-term-care-hospitals5597969210015.5s17.2s15.5s0.1s0.015
/provider-data/dataset/yc9t-dgbk119796926314.7s16.5s14.7s1.4s0.397
/provider-characteristics/medicare-provider-supplier-enrollment/medicare-provider-and-supplier-taxonomy-crosswalk/data/december-2024529510054503.4s9.6s3.7s0.6s0
/quality-of-care/minimum-data-set-frequency/api-docs509010092503.3s8.5s3.3s0.8s0.024
/provider-data/dataset/muwa-iene119796926013.5s16.5s13.5s1.2s0.458
/cms-innovation-center-programs/disease-episode-based-payment-models/managing-clinician-aggregation-group-performance/data/december-2023499510054503.3s9.5s3.5s0.7s0
/provider-data/dataset/tqkv-mgxq169796926214.9s16.7s14.9s0.8s0.421
/provider-data/dataset/23ew-n7w969796925914.7s16.8s14.7s2.1s0.488
/summary-statistics-on-use-and-payments/medicare-medicaid-service-type-reports/medicare-home-health-patients-and-visits-by-state/data/2020649510054503.3s10.8s3.4s0.2s0
/provider-data/dataset/95rg-2uspn/an/an/an/an/an/an/an/an/an/a
/provider-characteristics/medicare-provider-supplier-enrollment/home-infusion-therapy-providers/data/april-7-2026529510054503.4s8.6s3.7s0.6s0.002
/provider-data/dataset/a174-a962159796926414.7s16.6s14.7s1.0s0.384
/provider-data/topics/home-health-services/about-using-government-data54100739210015.5s17.1s15.5s0.1s0.001
/provider-data/dataset/7d6a-e7a6129796926415.0s17.0s15.0s1.4s0.383
/resources/aco-reach-providers-data-dictionary549610092503.3s9.6s3.7s0.5s0
/provider-data/dataset/x663-bwbj89796925614.6s16.7s14.6s1.3s0.559
/quality-of-care/long-term-care-facility-characteristics/data/q1-2025509510054503.6s7.8s3.6s0.7s0.003
/provider-data/dataset/y2hd-n93en/an/an/an/an/an/an/an/an/an/a
/provider-data/dataset/axe7-s95e199796926315.5s16.5s15.5s0.7s0.397
/quality-of-care/deficit-reduction-act-hospital-acquired-condition-measures628710092503.3s10.1s4.0s0.3s0
/provider-data/dataset/ynj2-r877n/an/an/an/an/an/an/an/an/an/a
/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-change-of-ownership-owner-information/data/q1-2026659510054503.3s9.2s3.6s0.2s0.002
/provider-data/dataset/eda0-92f05097969210016.1s17.2s16.1s0.3s0
/resources/medicare-pac-utilization-ltch-by-geography-and-provider-data-dictionary619610092503.4s11.7s4.1s0.3s0
/quality-of-care/payroll-based-journal-employee-detail-nursing-home-staffing/data/q2-202543957754503.3s9.2s4.2s1.2s0
/cms-innovation-center-programs/alternative-payments-medicare-diabetes-prevention-program529610092503.3s10.2s3.7s0.6s0
/provider-characteristics/hospitals-and-other-facilities/skilled-nursing-facility-enrollments/data41957754503.6s9.2s4.1s1.4s0
/provider-summary-by-type-of-service/medicare-post-acute-care-hospice/medicare-post-acute-care-hospice-by-provider-and-service53937383503.4s9.9s3.4s0.6s0.004
/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-supplier488710092503.4s10.6s4.6s0.7s0
/resources/ascs-and-ifeds-methodology669010092503.3s11.3s3.7s0.1s0
/provider-characteristics/hospitals-and-other-facilities/hospital-all-owners/api-docs529010092503.3s8.5s3.3s0.6s0
/resources/facility-level-minimum-data-set-frequency-methodology599410092505.0s7.8s5.1s0.2s0
/medicare-shared-savings-program/accountable-care-organization-participants648710092503.3s12.4s3.3s0.2s0
/resources/aco-reach-financial-and-quality-results-data-dictionary-2022459010092503.4s9.6s4.6s0.9s0
/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/2023499510054503.3s9.4s3.7s0.8s0
/provider-data/dataset/pudb-wetr149796926415.5s16.5s15.5s1.1s0.377
/provider-data/dataset/0d7d-e988369796926215.5s16.6s15.5s0.1s0.408
/provider-data/dataset/clinical_depression129796926213.5s16.5s13.5s1.2s0.414
/provider-data/datasets379696921617.1s18.6s17.1s0.1s0.346
/quality-of-care/minimum-data-set-frequency/data/q4-2024519510054503.3s10.0s3.8s0.6s0
/provider-data/dataset/0ddf-4325109796926212.8s16.6s12.8s1.7s0.406
/provider-data/dataset/6qxe-iqz8n/an/an/an/an/an/an/an/an/an/a
/resources/medicare-quarterly-part-b-spending-by-drug-data-dictionary42967792503.4s10.0s4.3s1.3s0.013
/provider-data/dataset/9n3s-kdb3n/an/an/an/an/an/an/an/an/an/a
/provider-data/datasets389696921616.7s18.9s16.7s0.1s0.346
/provider-data/dataset/fykj-qjeen/an/an/an/an/an/an/an/an/an/a
/provider-data/datasets559696835017.2s20.1s17.2s0.0s0
/provider-characteristics/hospitals-and-other-facilities/provider-of-services-file-quality-improvement-and-evaluation-system/data/q4-202438957754503.3s11.7s3.9s2.5s0
/provider-data/dataset/2fpu-cgbb129796926315.5s16.7s15.5s1.3s0.403
/provider-data/dataset/2rkq-ygai169796926714.7s16.7s14.7s1.1s0.341
/provider-characteristics/medicare-provider-supplier-enrollment/order-and-referring/data/july-10-2026549510054503.3s9.9s3.7s0.5s0
/provider-characteristics/medicare-provider-supplier-enrollment/home-infusion-therapy-providers/data/june-30-2026569510054503.3s10.6s3.6s0.5s0
/provider-data/search33969692717.5s20.4s17.5s0.1s0.542
/provider-data/archived-data/home-health-services49100969210014.8s16.6s14.8s0.3s0.005
/provider-data/topics/hospice-care/technical-details37100969210012.8s15.0s12.8s0.8s0.001
/provider-data/dataset/f4ga-b9gx139796926114.7s16.5s14.7s1.0s0.443
/provider-data/dataset/avtz-f2ge139796926115.5s16.8s15.5s1.0s0.426
/provider-data/dataset/djen-97ju99796926313.5s16.6s13.5s2.0s0.39
/provider-data/dataset/n0yb-util149796926415.0s16.7s15.0s1.1s0.382
/summary-statistics-on-use-and-payments/medicare-geographic-comparisons/medicare-advantage-geographic-variation-national-state538710092503.3s8.9s3.8s0.6s0
/provider-data/dataset/075a-d487209796926214.7s16.5s14.7s0.7s0.406
/medicare-shared-savings-program/county-level-aggregate-expenditure-and-risk-score-data-on-assignable-beneficiaries/api-docs46907792503.3s7.5s3.3s1.1s0.014
/provider-data/dataset/r5ix-sfxw99796926312.8s16.5s12.8s2.0s0.39
/provider-summary-by-type-of-service/medicare-durable-medical-equipment-devices-supplies/medicare-durable-medical-equipment-devices-supplies-by-geography-and-service/data/2023639510054503.4s9.6s3.8s0.2s0.001
/provider-data/dataset/8c70-d353139796926514.7s16.7s14.7s1.3s0.362
/provider-data/dataset/5zdx-ny2x119796925815.5s16.5s15.5s1.2s0.507
/provider-data/dataset/wkfw-kthe119796926413.6s16.8s13.6s1.5s0.387
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