Setting up Custom CNAME

  1. Pick a domain name that you want to use (e.g. and let us know of your choice.
  2. We issue an SSL certificate on our end, and you don't need to provide your own one.
  3. Add a CNAME record to your DNS zone, e.g.: cdn CNAME
  4. Once everything is set up and DNS changes propagate, you will need to use new URLs with your domain name:
  5. Configure your widgets to return proper URLs. E.g.: UPLOADCARE_CDN_BASE =;
  6. Replace hostname in URLs of already uploaded files served by your app. We recommend having an easily configurable setting over hard coding hostname of your URLs.