CORS Tester

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




If your CORS setup is not using a wildcard then this should be a domain that matches your AllowedOrigins


Shareable link:

Results

This URL will work correctly with CORS.

Headers

These are the response headers received when making the request.

accept-ranges: bytes
access-control-allow-methods: GET
access-control-allow-origin: *
access-control-max-age: 3600
cf-cache-status: DYNAMIC
cf-ray: 9fb3ab3a79b0e88e-CMH
content-length: 69
content-type: application/yaml
date: Wed, 13 May 2026 18:19:00 GMT
etag: "7348f5534cbb0ccf2ecae3796ed6278b"
last-modified: Wed, 13 May 2026 18:18:44 GMT
server: cloudflare
vary: Origin, Access-Control-Request-Headers, Access-Control-Request-Method
x-amz-id-2: GpGEswl1nKAA31C6GTe7/6DQ+5mjRjgDqrkdHsRZ8wK0J7FuBF1GVaCpvmPc2qwcCta8rLy/unw8A9t1nv45ld9QnCc9w1PQJxN4eyooZYU=
x-amz-replication-status: PENDING
x-amz-request-id: 9XHS383KK87PK2PA
x-amz-server-side-encryption: AES256
x-amz-storage-class: INTELLIGENT_TIERING
x-amz-version-id: s.7IcFTvRDaVYDJXcfXzoJt0ETsc_UCU

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