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www.healthcare.gov: ウェブ標準とメタデータ — 第 2026-W40 週

ウェブ標準とメタデータ

ScanGov(方法論は CC0)の精神に基づくウェブ標準、メタデータ、セキュリティのチェック。ホームページだけでなく、私たちのスキャン全体にわたって実行します。

各標準に合格した確認済みページの割合(低い順)。
標準合格率ページ
schema.org GovernmentOrganization markup0%0/555
hreflang alternates declared0%0/555
Open social presence (Mastodon/Bluesky) linked0%0/555
Canonical URL declared97%540/555
Meta description present97%537/555
Open Graph tags (6/6)98%542/555
Twitter card metadata98%542/555
Page has a <title>100%555/555
Character encoding declared100%555/555
Document language (lang) set100%555/555
Responsive viewport (zoom not disabled)100%555/555

555 ページにわたって

確認したページで Mastodon/Bluesky のリンクは検出されませんでした。

Progressive Web Resilience 555 ページにわたって

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結果Why it matters証拠
Service worker registered ✗ 0/555 pages A service worker is what makes offline access, caching, and background sync possible. —
Apple touch icon (iOS/bookmark icon) ✗ 1/555 pages iOS uses this icon for home-screen bookmarks and "Add to Home Screen" — without it the icon falls back to a screenshot. —
Manifest declares a maskable icon ✗ 0/555 pages A maskable icon lets the OS safely crop/mask the app icon on different device shapes without clipping content. No manifest declared
Service worker is active (not just registered) ✗ 0/555 pages An active service worker (not just registered) is what actually intercepts requests and serves cached content. —
Service worker controls this page load ✗ 0/555 pages A controlling service worker means THIS page load is being served/intercepted, not just a future one. —
Meets basic installability criteria ✗ 0/555 pages Determines whether the browser can realistically offer "Add to Home Screen" / install, based on manifest + service worker + HTTPS together. no readable web app manifest; no service worker registered
Web app manifest declared ~ 6/555 pages A web app manifest is required for installability and controls how the app appears when launched. —
Theme color declared ~ 6/555 pages Theme color controls the browser chrome/status-bar color when the site is installed or bookmarked. #000000
Manifest fetched and parsed successfully ~ 6/555 pages A manifest that fails to parse cannot drive installability or launch behavior even if the link is present. No manifest declared
HTTPS (required for service workers) ✓ 555/555 pages HTTPS is required for service workers and most install prompts. —