data.cms.gov: Standards web et métadonnées — semaine 2026-W40
Standards web et métadonnées
Vérifications de standards web, de métadonnées et de sécurité dans l'esprit de ScanGov (méthodologie CC0), exécutées sur l'ensemble de notre scan plutôt que sur la seule page d'accueil.
Part des pages vérifiées qui respectent chaque standard (la plus basse en premier).
Standard
Taux de réussite
Pages
schema.org GovernmentOrganization markup
0%
0/913
hreflang alternates declared
0%
0/913
Open social presence (Mastodon/Bluesky) linked
0%
0/913
Meta description present
26%
233/913
Canonical URL declared
38%
344/913
Open Graph tags (5/6)
58%
527/913
Twitter card metadata
58%
527/913
Page has a <title>
100%
913/913
Character encoding declared
100%
913/913
Document language (lang) set
100%
913/913
Responsive viewport (zoom not disabled)
100%
913/913
sur 913 page(s)
Aucun lien Mastodon/Bluesky détecté sur les pages vérifiées.
Progressive Web Resilience sur 913 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).
Capability
Résultat
Why it matters
Preuve
Web app manifest declared
✗ 0/913 pages
A web app manifest is required for installability and controls how the app appears when launched.
—
Service worker registered
✗ 0/913 pages
A service worker is what makes offline access, caching, and background sync possible.
—
Apple touch icon (iOS/bookmark icon)
✗ 0/913 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
✗ 0/913 pages
A manifest that fails to parse cannot drive installability or launch behavior even if the link is present.