Deep Link Doctor: A Universal Link and Android App Link Tester

[ZipQuantumHQ]

Universal Links and Android App Links can look correctly configured while a production tap still lands in the browser. The failure is usually somewhere in the public trust chain—not in the link syntax alone.

Reproducible first pass

curl -i https://example.com/.well-known/apple-app-site-association
curl -i https://example.com/.well-known/assetlinks.json

For each response, verify:

• HTTPS succeeds without an unexpected redirect chain.
• The association file returns HTTP 200 with the correct Content-Type.
• The body is valid JSON and is not an HTML error page.
• Apple App IDs match the expected Team ID and bundle ID.
• Android package names and SHA-256 certificate fingerprints match the installed build.
• Path rules actually cover the URL being tested.
• The result is retested on a real device with a clean install state.

What Deep Link Doctor adds

Deep Link Doctor inspects the public URL, redirects, AASA and assetlinks.json, validates the identifiers and path coverage, then ranks the fixes so teams can start with the most likely blocker. The first public diagnosis requires no account.

Read the complete diagnostic guide

Run Deep Link Doctor

Which part of the deep-link trust chain causes the most false confidence in your release process?