br), or Zstandard (zstd), depending on the incoming Accept-Encoding header.
Compression is guaranteed for a predefined set of MIME types listed below, as well as for files with the following extensions—even if the Content-Type header is missing or does not exactly match the list:
.css.js.json.xml.svg.html
If you don’t see a specific MIME type listed, feel free to contact our support team, and we’ll be happy to review it for possible inclusion.