CDN custom domain / public URL
Optional https custom domain for signed downloads. Not available for Other provider.
CDN custom domain / public URL
Override the provider host used for signed downloads when you front the bucket with your own hostname.
Where to find it
CDN form → Public / custom domain URL (placeholder https://cdn.example.com) + in-form Documentation
How it works
Value is normalized to an https origin and used to rewrite signed download URLs. When set, apiUrl follows the custom domain.
In-admin Documentation covers provider wiring (CloudFront for AWS/Wasabi, R2 custom domains, Spaces CDN, Contabo via Cloudflare host rewrite, IDrive CNAME).
Other provider has no custom-domain field. Contabo/IDrive still keep a separate API Endpoint URL for the S3 API.
Pair with CDN Performance mode when you want direct browser traffic to that host.
Common problems
Contabo custom domain hard to wire
In-admin docs may require Cloudflare Enterprise Origin Rules for Host header rewrite - follow the steps for your provider.