What is GZIP compression?
GZIP compression reduces the size of pages in the web server before they are sent to the site visitor’s browser. This saves a lot of traffic and makes pages load and display much faster. Then the web browser of site visitors automatically unpacks pages. Compression and unpacking take only a split second.
How GZIP compression test works?
Our tool checks if gzip compression is enabled on the web server hosting your site. After connecting to your web server, the results page will display information about whether gzip is enabled, as well as additional information about compression efficiency and actual traffic savings for the specified page.
How to Enable GZIP Compression to speed your WordPress site?
Please check out the guide by Alisha Davis from Kinsta WP hosting.