PWA manifest checker
Discovers a page's web app manifest and validates name, icons, start_url, scope, and display mode.
1 · Input
What is checked
The linked <link rel="manifest"> is fetched and parsed for name/short_name, start_url, scope, display, theme_color, background_color, id, orientation, screenshots, shortcuts, share_target, and every declared icon - each icon is fetched to confirm it actually resolves, and checked for the 192x192/512x512 sizes and a maskable purpose that installability commonly expects.
Valid does not mean installable
A technically valid manifest is reported as exactly that - it is not a guarantee a browser will offer to install the site, since browsers apply their own further criteria (HTTPS, a registered service worker, and more) on top of the manifest itself.
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