www.cdc.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%
0/865
hreflang alternates declared
0%
0/865
Open social presence (Mastodon/Bluesky) linked
0%
0/865
Open Graph tags (0/6)
55%
475/865
Twitter card metadata
60%
523/865
Meta description present
66%
571/865
Canonical URL declared
73%
631/865
Character encoding declared
75%
653/865
Responsive viewport (zoom not disabled)
75%
652/865
Document language (lang) set
80%
696/865
Page has a <title>
100%
864/865
over 865 pagina('s)
Geen Mastodon-/Bluesky-links gedetecteerd op de gecontroleerde pagina's.
Progressive Web Resilience over 865 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
Service worker registered
✗ 0/865 pages
A service worker is what makes offline access, caching, and background sync possible.
—
Manifest declares a maskable icon
✗ 0/865 pages
A maskable icon lets the OS safely crop/mask the app icon on different device shapes without clipping content.