CORS Tester

Use this little website to test if a URL is setup correctly to work with CORS.

Shareable link:


This URL will work correctly with CORS.


These are the response headers received when making the request.

access-control-allow-origin: *
cf-cache-status: DYNAMIC
cf-ray: 6d46a15d20ab5a45-IAD
connection: keep-alive
date: Fri, 28 Jan 2022 02:01:01 GMT
etag: W/"9f0-5c05035c1f831-gzip"
expect-ct: max-age=604800, report-uri=""
last-modified: Mon, 19 Apr 2021 09:46:55 GMT
server: cloudflare
transfer-encoding: chunked
vary: User-Agent

CORS tester was built by @mscccc. The code is available on GitHub. Sponsored by HTML/CSS to Image.