App install banner configuration missing: what it is, why it matters, and how to fix it

This site has a native app but lacks the web app manifest and service worker configuration needed to trigger browser-native app install banners.

Browser-native app install banners are more effective and less intrusive than custom app download interstitials. Google penalizes pages that show intrusive interstitials (including app install pop-ups), so using the native banner API is the recommended approach for promoting your app.

Create a web app manifest with related_applications and add a service worker. This enables the browser's native app install banner, which is not subject to Google's intrusive interstitial penalty.

This is an advisory finding: not a defect, but an opportunity flagged so you can decide deliberately rather than by accident. It belongs to the mobile family of checks.

Run a free Dr Urls audit: it crawls your site, detects app install banner configuration missing on every affected page, shows example URLs, and generates a ready-to-use fix task. Re-scan after fixing to verify the issue is gone.