mod_pagespeed is an open-source Apache module that automatically optimizes web pages and resources on them. It does this by rewriting the resources using filters that implement web performance best practices. Webmasters and web developers can use mod_pagespeed to improve the performance of their web pages when serving content with the Apache HTTP Server.
Install
mod_pagespeed is now available as a downloadable binary for i386 and x86-64bit systems, and is tested with two flavors of Linux: CentOS and Ubuntu. The developer may try to use them with other Debian-based and RPM-based Linux distributions.
mod_pagespeed currently only supports Apache 2.2. There are no plans to support earlier versions of Apache, but patches are welcome.