Custom CNAME

Custom CNAME

Custom CNAME is a premium file upload feature that allows you to format Filestack URLs with a custom origin. This means you can replace the base Filestack domain with a fs subdomain on your own fully qualified domain name:

So this…

Becomes this:


This can be useful if you expose your Filestack URLs to customers or need all of your assets to be derived from the same origin.

It requires that we add your domain to our managed wild-card SSL certificate in the Filestack CDN, and that you add the required DNS records for each Filestack service you intend to use.

The custom CNAME works for delivery and also for ingress traffic, such as when making requests to our API endpoints. For instance, you can configure the JavaScript API client to use your CNAME for all outgoing requests by setting the client’s cname option:

const options = { cname: '' };
const client = filestack.init('apikey', options);

Please contact sales if you would like to set up a custom CNAME for your application.