CORS Preflight and Full Request Tester

URL to Test

Enter the URL where you want to test the CORS policy. The tester will attempt to send requests to this URL.

Is this a localhost project?

Check this if you are testing a project hosted on localhost. This modifies how the request is handled to simulate a real external request more accurately.

HTTP Method

Choose the HTTP method for the request. This will be used to simulate a full request after the preflight check.

Custom Origin

Set a custom origin for the CORS request. This simulates sending the request from a specified origin.

Custom Headers

Specify custom headers for the request. Each header should be entered on a new line in the format 'Header-Name: Header-Value'.

The results of the CORS test will be displayed below. This includes the outcomes of both the preflight and the full requests, indicating whether or not CORS policies permit your requests from the specified origin with the selected HTTP method and headers.