www.cdc.gov: Web standards & metadata — week 2026-W28
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 |
|---|
| schema.org GovernmentOrganization markup | 0% | 0/914 |
|---|
| hreflang alternates declared | 0% | 0/914 |
|---|
| Open social presence (Mastodon/Bluesky) linked | 0% | 0/914 |
|---|
| Service worker registered | 0% | 0/914 |
|---|
| Open Graph tags (6/6) | 56% | 515/914 |
|---|
| Twitter card metadata | 56% | 508/914 |
|---|
| Meta description present | 69% | 627/914 |
|---|
| Canonical URL declared | 70% | 643/914 |
|---|
| Character encoding declared | 71% | 650/914 |
|---|
| Responsive viewport (zoom not disabled) | 71% | 650/914 |
|---|
| Web app manifest declared | 71% | 648/914 |
|---|
| Theme color declared | 71% | 649/914 |
|---|
| Apple touch icon (iOS/bookmark icon) | 71% | 648/914 |
|---|
| Document language (lang) set | 79% | 720/914 |
|---|
| Page has a <title> | 100% | 914/914 |
|---|
| HTTPS (required for service workers) | 100% | 914/914 |
|---|
across 914 page(s)
No Mastodon/Bluesky links detected on checked pages.