// Tools

Apple App Site Association Validator

Validate your apple-app-site-association file for Universal Links and passkey implementation on iOS.

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What is AASA?

The Apple App Site Association file establishes a secure association between your iOS app and your website. It's required for Universal Links, Handoff, and passkey implementation on Apple platforms.

File Location

Host this file at one of these locations:

  • https://domain.com/.well-known/apple-app-site-association
  • https://domain.com/apple-app-site-association

Validation Checks

  • Valid JSON object structure
  • Required "applinks" section with details array
  • Valid appID format (TeamID.BundleID)
  • Non-empty paths array for each detail entry

For Passkey Support

Include the webcredentials section:

"webcredentials": {
  "apps": ["TEAMID.com.example.app"]
}