Hello Guys,
After installing mod_pagespeed (https://www.milesweb.com/forums/how-to%27s/how-to-install-mod_pagespeed-in-cpanel-using-easyapache/) successfully on cPanel server, if you want to check the version, fire the below command on your server.
Quote#curl I http://yourdomain.com
Check the headers & find for
X-Mod-Pagespeed: 1.3.25.4-2941. This should the version.
Enjoy !!