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VRLPROAttribution Engine
Free Developer Tool

Apple App Site Association (AASA) File Validator & Tester

Debug iOS Universal Links in seconds. Test if your apple-app-site-association file is properly formatted, served over HTTPS with valid content-type, and accessible to Apple's CDN.

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Apple App Site Association (AASA) Validator

Test if your domain serves a valid apple-app-site-association file over HTTPS.

iOS Universal Links Tester

Validation Result for vrlpro.in: PASSED

HTTPS Header

200 OK (TLS Valid)

JSON MIME Type

application/json

applinks Config

App ID Configured

{
  "applinks": {
    "apps": [],
    "details": [
      {
        "appID": "TEAMID.com.yourbrand.app",
        "paths": ["/r/*", "/q/*", "/l/*"]
      }
    ]
  }
}
The Real Problem

Why iOS Universal Links Fail to Open Apps

Apple requires strict formatting, proper HTTPS headers, and valid JSON structure for `apple-app-site-association` files. A single trailing comma causes iOS to ignore your app links completely.

✕iOS caches AASA files aggressively, making manual debugging painful.
✕Incorrect MIME type (`application/json`) breaks Apple's link validator.
The VRLPRO Solution

Automated AASA Hosting with VRLPRO

Skip manual server configuration. VRLPRO auto-generates and hosts your verified AASA file at `https://vrlpro.in/.well-known/apple-app-site-association`.

Instant JSON Validation

Verify appID, bundle identifier, and pathPrefix syntax.

Implementation Guide

Deploy in 3 Simple Steps

1

Enter Your Domain

Type your domain name to test live AASA configuration.

2

Review Diagnostic Report

Check status of HTTPS certificates, JSON syntax, and path matching.

3

Fix with VRLPRO Auto-Hosting

Let VRLPRO host your AASA file automatically.

Frequently Asked Questions

Everything you need to know before launching.

Apple expects the file at https://yourdomain.com/.well-known/apple-app-site-association with valid HTTPS.

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