Google propose un module d’accélération d’Apache (mod_pagespeed)

“Here are a few simple optimizations that are a pain to do manually, but that mod_pagespeed excels at:

* Making changes to the pages built by the Content Management Systems (CMS) with no need to make changes to the CMS itself,
* Recompressing an image when its HTML context changes to serve only the bytes required (typically tedious to optimize manually), and
* Extending the cache lifetime of the logo and images of your website to a year, while still allowing you to update these at any time.”