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
Web app manifest declared
✗ 0/7 pages
A web app manifest is required for installability and controls how the app appears when launched.
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Service worker registered
✗ 0/7 pages
A service worker is what makes offline access, caching, and background sync possible.
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Theme color declared
✗ 0/7 pages
Theme color controls the browser chrome/status-bar color when the site is installed or bookmarked.
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Apple touch icon (iOS/bookmark icon)
✗ 0/7 pages
iOS uses this icon for home-screen bookmarks and "Add to Home Screen" — without it the icon falls back to a screenshot.
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Manifest fetched and parsed successfully
✗ 0/7 pages
A manifest that fails to parse cannot drive installability or launch behavior even if the link is present.