www.cms.gov: Web standards & metadata — week 2026-W30
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).
Standard
Pass rate
Pages
hreflang alternates declared
0%
0/3340
Open Graph tags (0/6)
0%
0/3340
Twitter card metadata
0%
0/3340
Open social presence (Mastodon/Bluesky) linked
0%
0/3340
schema.org GovernmentOrganization markup
3%
116/3340
Meta description present
40%
1331/3340
Canonical URL declared
72%
2420/3340
Character encoding declared
99%
3307/3340
Document language (lang) set
99%
3310/3340
Responsive viewport (zoom not disabled)
99%
3310/3340
Page has a <title>
100%
3340/3340
across 3340 page(s)
No Mastodon/Bluesky links detected on checked pages.
Progressive Web Resilience across 3340 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
Result
Why it matters
Evidence
Web app manifest declared
✗ 0/3340 pages
A web app manifest is required for installability and controls how the app appears when launched.
—
Service worker registered
✗ 0/3340 pages
A service worker is what makes offline access, caching, and background sync possible.
—
Theme color declared
✗ 0/3340 pages
Theme color controls the browser chrome/status-bar color when the site is installed or bookmarked.
—
Manifest fetched and parsed successfully
✗ 0/3340 pages
A manifest that fails to parse cannot drive installability or launch behavior even if the link is present.