CORS Tester

Method

Target URL

Origin to simulate

Request headers to test (comma-separated, optional)

About this tool

This runs the OPTIONS preflight and the actual request from our server (not your browser), so it can show you the raw CORS headers even when the browser itself would block or hide them.

Frequently asked questions

What is CORS Tester?

Test CORS behavior of an endpoint. It is one of the Security & Crypto tools on MyCodeTips.

How do I use CORS Tester?

Open the tool, enter or paste your input, and the result appears right away. Use the Copy button to copy it.

Is CORS Tester free to use?

Yes. It is free to use and does not need an account.

Is my data safe with CORS Tester?

The result is produced on our servers. We do not sell your data; see our privacy policy for details.

Can I share my result?

Yes. Use the share buttons below the tool to post a link or copy a link to the tool page.