Platform independent Google PageSpeed documentation
PageSpeed is a technology from Google, designed to help a website's performance optimizations. Faster websites offer a better user experience, boost rankings in Google and increase conversion rates.
Pagespeed lets you measure and (automatically) optimize your web pages and comply with web performance best practices. Speed up your web site and boost web performance!
Analyze your webpage speed
Use PageSpeed Test tool to analyze the performance of your website.
Pagespeed server modules
Instead of manually improving your website you can let PageSpeed automatically do the optimizations for you. Google offers open-source modules for Apache and NGINX, We-Amp offers an open-source plugin for Apache Traffic Server and a commercial module for Microsoft IIS.