IOS UNIVERSAL LINKS
AASA Validator
Check the Apple App Site Association file that iOS uses to authorize Universal Links for your domain.
What this AASA validator checks
/.well-known/apple-app-site-associationis reachable over HTTPS.- The endpoint returns HTTP 200 without a redirect.
- The response is valid JSON with an appropriate content type.
applinks.detailscontains usable app identifiers and routing rules.- Modern
appIDs+componentsand legacyappID+pathsformats are recognized.
Common AASA failures
Universal Links often fail because the AASA endpoint redirects, returns HTML, has malformed JSON, uses the wrong application identifier, or removes a path/component rule during deployment. Enter your domain above to inspect the current public file.
Continuous monitoring
After a validation, you can optionally verify DNS ownership and monitor the association file every 30 minutes. A breaking semantic change can trigger an operational email alert.