Meet PWA installability criteria

Installable PWAs appear in the browser's address bar install prompt and in app stores, giving users a native-app experience without an app store listing. Studies consistently show that installed PWAs have higher engagement and retention than browser-only equivalents — users who install spend 3× more time in the app on average.

Quick Reference

• Serve the app over HTTPS (required by browsers)
• Link a valid web app manifest with name, icons, start_url, and display
• Provide a 192×192 and 512×512 icon; add a maskable variant for Android
• Register a service worker that responds with 200 when offline

Check

Check whether this site meets the PWA installability criteria: HTTPS, valid manifest, service worker, and appropriate icons.

Fix

Add or fix the web app manifest, ensure a service worker is registered, and provide correctly sized maskable icons.