GZIP is a form of compression that can drastically speed up your site. Here’s how you can enable it.
Plesk #
GZIP is already tuned and enabled. You don’t need to do anything, and shouldn’t, as adding the rules below may actually slow down your site.
cPanel #
Add the following rules via FTP or file manager to your .htaccess file. (“Showing hidden files” needs to be enabled in the cPanel file manager settings).
AddOutputFilterByType DEFLATE text/plain AddOutputFilterByType DEFLATE text/html AddOutputFilterByType DEFLATE text/xml AddOutputFilterByType DEFLATE text/css AddOutputFilterByType DEFLATE application/xml AddOutputFilterByType DEFLATE application/xhtml+xml AddOutputFilterByType DEFLATE application/rss+xml AddOutputFilterByType DEFLATE application/javascript AddOutputFilterByType DEFLATE application/x-javascript
Save the file, and GZIP is now enabled.