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Custom Domain with Images

Set up custom domain for Images using a Worker or serve images using a prefix path and Cloudflare registered domain.

To serve images from a custom domain:

  1. Log in to the Cloudflare dashboard.
  2. Select you account > select Workers.
  3. Select Create a service.
  4. In your Workers, select Quick edit and paste the following code.
export default {
async fetch(request) {
// You can find this in the dashboard, it should look something like this: ZWd9g1K7eljCn_KDTu_MWA
const accountHash = '';
const { pathname } = new URL(request.url);
// A request to something like cdn.example.com/83eb7b2-5392-4565-b69e-aff66acddd00/public
// will fetch "https://imagedelivery.net/<accountHash>/83eb7b2-5392-4565-b69e-aff66acddd00/public"
return fetch(`https://imagedelivery.net/${accountHash}${pathname}`);
}
};
export default {
async fetch(request: Request) {
// You can find this in the dashboard, it should look something like this: ZWd9g1K7eljCn_KDTu_MWA
const accountHash = '';
const { pathname } = new URL(request.url);
// A request to something like cdn.example.com/83eb7b2-5392-4565-b69e-aff66acddd00/public
// will fetch "https://imagedelivery.net/<accountHash>/83eb7b2-5392-4565-b69e-aff66acddd00/public"
return fetch(`https://imagedelivery.net/${accountHash}${pathname}`);
}
};

Another way you can serve images from a custom domain is by using the cdn-cgi/imagedelivery prefix path which is used as path to trigger cdn-cgi image proxy.

Below is an example showing the hostname as a Cloudflare proxied domain under the same account as the Image, followed with the prefix path and the image <ACCOUNT_HASH>, <IMAGE_ID> and <VARIANT_NAME> which can be found in the Images on the Cloudflare dashboard.

https://example.com/cdn-cgi/imagedelivery/<ACCOUNT_HASH>/<IMAGE_ID>/<VARIANT_NAME>