CORS Policy Tester

Simulate CORS requests and detect misconfigurations. Preflight and simple request testing.

Simulate CORS preflight and simple requests with custom origin, method, and headers. See expected server responses and flag misconfigurations like wildcard with credentials.

Frequently Asked Questions

Does it send real requests?

The tool can simulate expected behavior client-side; for live URL testing use our CORS debugger utility.

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