CORS Tester

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

Shareable link:


This URL will not work correctly with CORS.

What's wrong?

It does not have the access-control-allow-origin header set to *. Without this header, requests from other domains cannot be made to it via a users browser.

How to fix it?

If you have access to the server for the URL, you'll need to modify it to add the access-control-allow-origin header. If you do not have access, you'll need to upload the file somewhere else.


These are the response headers received when making the request.

accept-ranges: bytes
cache-control: max-age=14400
cf-cache-status: MISS
cf-ray: 6b5ef88223ae74b3-IAD
connection: keep-alive
content-disposition: inline; filename=geoserver-dispatch.image
content-length: 28232
content-type: image/png
date: Mon, 29 Nov 2021 21:36:18 GMT
expect-ct: max-age=604800, report-uri=""
geowebcache-cache-result: HIT
geowebcache-crs: EPSG:31370
geowebcache-gridset: BPL72VL
geowebcache-tile-bounds: 75464.0,198000.0,141000.0,263536.0
geowebcache-tile-index: [1, 2, 2], [1, 2, 2]
last-modified: Thu, 28 Oct 2021 20:46:29 GMT
server: cloudflare
x-frame-options: SAMEORIGIN
x-powered-by: ASP.NET, ARR/3.0, ASP.NET, ASP.NET

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