There is a new compression filter from Google which is slightly better than gzip on both resources and compression. Google has developed a module for nginx already, however apache only has a module in trunk (2.5). There is a github project for brotli_module which seems promising. Could you add it to EA4 experimental? Information: https://ctrl.blog/entry/httpd-mod-brotli https://github.com/kjdev/apache-mod-brotli https://ayesh.me/apache-brotli