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CORS-Tester

CORS Doesn't Have to Be Hard!

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#1853in Developer Tools
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Description

Test CORS on your API URL with this online CORS Tester. Verify CORS policies, check headers, and get actionable insights to fix issues. Ensu…

Preview

CORS-Tester screenshot 1

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CORS-Tester FAQ

What is CORS-Tester?

Test CORS on your API URL with this online CORS Tester. Verify CORS policies, check headers, and get actionable insights to fix issues. Ensure cross-origin resource sharing works effortlessly!

Do I need to download CORS-Tester?

No. CORS-Tester runs in your browser at cors-error.dev, so there's nothing to install.

What are the best CORS-Tester alternatives?

Popular alternatives to CORS-Tester include Lost Pixel, Percy and Argos. See all CORS-Tester alternatives