Setting up a GZIP compression isn’t nearly as difficult as it sounds. If you’re using Apache, head over to the module mod-deflate and you’ll see that GZIP compression is already in the default settings and you can simply activate it. If you’re using IIS, you can set up the compression settings either through the IIS Manager interface or via the command line. It’s always a good idea to back up your server settings before making any changes to your settings or web server configurations.