nih.gov: Webstandaarden en metadata — week 2026-W40
Webstandaarden en metadata
Controles van webstandaarden, metadata en beveiliging in de geest van ScanGov (methodologie CC0), uitgevoerd over onze hele scan in plaats van alleen de homepage.
Aandeel gecontroleerde pagina's dat aan elke standaard voldoet (laagste eerst).
Standaard
Slaagpercentage
Pagina's
schema.org GovernmentOrganization markup
0%
0/7
hreflang alternates declared
0%
0/7
Open social presence (Mastodon/Bluesky) linked
0%
0/7
Meta description present
86%
6/7
Canonical URL declared
100%
7/7
Page has a <title>
100%
7/7
Character encoding declared
100%
7/7
Document language (lang) set
100%
7/7
Responsive viewport (zoom not disabled)
100%
7/7
Open Graph tags (5/6)
100%
7/7
Twitter card metadata
100%
7/7
over 7 pagina('s)
Geen Mastodon-/Bluesky-links gedetecteerd op de gecontroleerde pagina's.
Progressive Web Resilience over 7 pagina('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).
Capability
Resultaat
Why it matters
Bewijs
Web app manifest declared
✗ 0/7 pages
A web app manifest is required for installability and controls how the app appears when launched.
—
Service worker registered
✗ 0/7 pages
A service worker is what makes offline access, caching, and background sync possible.
—
Theme color declared
✗ 0/7 pages
Theme color controls the browser chrome/status-bar color when the site is installed or bookmarked.
—
Apple touch icon (iOS/bookmark icon)
✗ 0/7 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
✗ 0/7 pages
A manifest that fails to parse cannot drive installability or launch behavior even if the link is present.