Deep Link Tester

A deep link is a URL that opens a specific page or screen within a mobile app, rather than just launching the app's home screen. It enables seamless user experiences from web, email, social media, or ads directly into your app.

The apple-app-site-association file is a JSON file you host on your domain that tells iOS which URLs should open in your app. It must be served from /.well-known/apple-app-site-association with the correct content-type.

The assetlinks.json file is hosted at /.well-known/assetlinks.json and tells Android which app should handle URLs from your domain (Android App Links). It contains your app's package name and signing certificate fingerprint.

Common issues include: missing or invalid AASA/assetlinks.json files, incorrect app IDs or package names, SSL certificate problems, wrong content-type headers, or the app not being configured to handle the URL patterns. This tool helps diagnose these issues.