"Google wants to make the Web faster. As well as optimizing its own sites and services to run at blazing speed, the company has been helping to streamline the rest of the Web, too. Now Google has released free software that could make many sites load twice as fast. The software, called mod_pagespeed, can be installed and configured on Apache Web servers, the most commonly used software for running websites. Once installed, mod_pagespeed determines ways to optimize a site's performance on the fly. For example, it will compress images more efficiently and change settings so that more of the pages are stored in a user's browser cache, so that the same data doesn't have to be loaded repeatedly."