Universal Links Validator
Check the Apple and Android association files for your domain. Review redirects, response types, JSON, and the Apple CDN cache in one place.
Complete the captcha check before running the validator.
Good to know
What does the AASA validator check?
It checks whether the Apple App Site Association file is reachable, direct, JSON-compatible, within expected limits, and visible through the Apple CDN cache.
Can this validate Android App Links?
Yes. The validator also checks /.well-known/assetlinks.json for reachability, redirects, content type, JSON shape, and Android App Links readiness signals.
Why do deep links still fail after the file validates?
The next causes are usually bundle IDs, package names, SHA-256 fingerprints, app entitlements, stale Apple CDN cache, or app-side route handling.
Related guides
Set up Universal Links and App Links
Connect your domain, publish association files, and configure your app.
Fix a link that will not open your app
Work through association files, app settings, and device behavior.
Connect a custom domain
Use your own domain with li-nk.me and check its DNS setup.