mod_pagespeed is an open-source plugin for apache made by google that helps increase your website speed and reduce latency and bandwidth.
What is does?
- Use url fingerprint for the unque js file
- Optimise the caching for any single file telling the browser for how long it has to cache it
To enable mod_pagespeed you need to add the following snippet to the htaccess file of your website:
<IfModule pagespeed_module> ModPagespeed on </IfModule>