vital-scans open quality ledger

nih.gov: Web standards & metadata — week 2026-W33

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
schema.org GovernmentOrganization markup0%0/10
hreflang alternates declared0%0/10
Open social presence (Mastodon/Bluesky) linked0%0/10
Canonical URL declared100%10/10
Page has a <title>100%10/10
Meta description present100%10/10
Character encoding declared100%10/10
Document language (lang) set100%10/10
Responsive viewport (zoom not disabled)100%10/10
Open Graph tags (6/6)100%10/10
Twitter card metadata100%10/10

across 10 page(s)

No Mastodon/Bluesky links detected on checked pages.

Progressive Web Resilience across 10 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
Web app manifest declared ✗ 0/10 pages A web app manifest is required for installability and controls how the app appears when launched. —
Service worker registered ✗ 0/10 pages A service worker is what makes offline access, caching, and background sync possible. —
Theme color declared ✗ 0/10 pages Theme color controls the browser chrome/status-bar color when the site is installed or bookmarked. —
Apple touch icon (iOS/bookmark icon) ✗ 0/10 pages iOS uses this icon for home-screen bookmarks and "Add to Home Screen" — without it the icon falls back to a screenshot. —
Manifest fetched and parsed successfully ✗ 0/10 pages A manifest that fails to parse cannot drive installability or launch behavior even if the link is present. No manifest declared
Manifest declares a maskable icon ✗ 0/10 pages A maskable icon lets the OS safely crop/mask the app icon on different device shapes without clipping content. No manifest declared
Service worker is active (not just registered) ✗ 0/10 pages An active service worker (not just registered) is what actually intercepts requests and serves cached content. —
Service worker controls this page load ✗ 0/10 pages A controlling service worker means THIS page load is being served/intercepted, not just a future one. —
Meets basic installability criteria ✗ 0/10 pages Determines whether the browser can realistically offer "Add to Home Screen" / install, based on manifest + service worker + HTTPS together. no readable web app manifest; no service worker registered
HTTPS (required for service workers) ✓ 10/10 pages HTTPS is required for service workers and most install prompts. —