Yes, the service support compressing objects using Brotli compression. Brotli compression provides for improved size reduction for modern browsers. The service will automatically send Brotli compressed objects to modern browsers that support it. For older browsers the service will fallback to using gzip, or for clients that don't support compression will send uncompressed objects.
Note that Brotli compression is only support for HTTPS traffic, this is related to the fact that browsers only implement support for HTTPS connections vs. a limitation with our service.