vital-scans open quality ledger

www.medicare.gov: Web standards & metadata — week 2026-W37

Web standards & metadata

Web-standards, metadata, and security checks in the spirit of ScanGov (methodology CC0), run across our scan rather than only the homepage.

Share of checked pages passing each standard (lowest first).
StandardPass ratePages
Open social presence (Mastodon/Bluesky) linked0%0/940
schema.org GovernmentOrganization markup1%5/940
Meta description present58%544/940
Canonical URL declared88%825/940
hreflang alternates declared88%825/940
Open Graph tags (5/6)88%825/940
Twitter card metadata88%825/940
Page has a <title>99%933/940
Character encoding declared100%940/940
Document language (lang) set100%940/940
Responsive viewport (zoom not disabled)100%940/940

across 940 page(s)

No Mastodon/Bluesky links detected on checked pages.

Progressive Web Resilience across 940 page(s)

Capabilities that keep the site useful under real-world conditions — unreliable connectivity, interrupted sessions, mobile install. Not a compliance score: each row is independent evidence.

Progressive Web Resilience signals (lowest pass rate first).
CapabilityResultWhy it mattersEvidence
Service worker registered ✗ 0/940 pages A service worker is what makes offline access, caching, and background sync possible. —
Manifest declares a maskable icon ✗ 0/940 pages A maskable icon lets the OS safely crop/mask the app icon on different device shapes without clipping content. No icon with purpose "maskable"
Service worker is active (not just registered) ✗ 0/940 pages An active service worker (not just registered) is what actually intercepts requests and serves cached content. —
Service worker controls this page load ✗ 0/940 pages A controlling service worker means THIS page load is being served/intercepted, not just a future one. —
Meets basic installability criteria ✗ 0/940 pages Determines whether the browser can realistically offer "Add to Home Screen" / install, based on manifest + service worker + HTTPS together. no 192x192 or larger icon declared; no service worker registered
Web app manifest declared ~ 115/940 pages A web app manifest is required for installability and controls how the app appears when launched. —
Theme color declared ~ 115/940 pages Theme color controls the browser chrome/status-bar color when the site is installed or bookmarked. #000000
Manifest fetched and parsed successfully ~ 115/940 pages A manifest that fails to parse cannot drive installability or launch behavior even if the link is present. display=standalone, start_url=./index.html
Apple touch icon (iOS/bookmark icon) ~ 927/940 pages iOS uses this icon for home-screen bookmarks and "Add to Home Screen" — without it the icon falls back to a screenshot. —
HTTPS (required for service workers) ✓ 940/940 pages HTTPS is required for service workers and most install prompts. —