Test any public HTTPS website for its web app manifest, installability signals, icons, display mode, screenshots and service worker registration.
Read-only scan · HTTPS only · up to 12 requests per hour · no account required
Written and reviewed by the PWAs.app web platform editorial team.
The checker reads the public HTML and linked web app manifest from the URL you provide. It tests HTTPS, manifest validity, app identity, start URL, display mode, large and maskable icons, screenshots and service worker registration signals.
The score is a technical readiness indicator, not a user rating. A lower score shows where installation metadata or presentation assets need work.
Start with failed checks because they usually block a reliable app identity. Then address warnings such as missing maskable icons, screenshots or standalone display mode.
Run the checker again after deployment. PWAs.app fetches the public production version, so local or unpublished changes are not included.
Short answers about what the public tool checks and what remains under browser or website-owner control.
Yes. The public checker does not require an account. Reasonable hourly limits protect the scanning service from automated abuse.
No. Installation behaviour still depends on the browser and operating system. The score verifies public technical signals that PWAs.app can inspect consistently.
No. It retrieves bounded public HTML and manifest resources through a network-safe server-side scanner. It does not sign in or submit forms.