CORS Tester & Builder

Analyze CORS response headers for security issues and build CORS configurations with code generation for multiple server platforms

All processing happens in your browser. No data is uploaded.

Offline Ready

CORS Tester & Builder

Analyze CORS response headers for security issues and build CORS configurations with code generation for multiple server platforms

🔒All processing happens in your browser. No data is uploaded.

Analyze

Build

CORS Response Headers

Paste CORS response headers here, one per line...
Example:
Access-Control-Allow-Origin: https://example.com
Access-Control-Allow-Methods: GET, POST
Access-Control-Allow-Headers: Content-Type