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mod_pagespeed is an open-source Apache module created by Google to help Make the Web Faster by rewriting web pages to reduce latency and bandwidth.

mod_pagespeed releases are available as precompiled linux packages or as source. (See Release Notes for information about bugs fixed)

mod_pagespeed is an open-source Apache module which automatically applies web performance best practices to pages, and associated assets (CSS, JavaScript, images) without requiring that you modify your existing content or workflow.

mod_pagespeed is built on PageSpeed Optimization Libraries, deployed across 100,000+ web-sites, and provided by popular hosting and CDN providers such as DreamHost, GoDaddy, EdgeCast, and others. There are 40+ available optimizations filters, which include:

• Image optimization, compression, and resizing
• CSS & JavaScript concatenation, minification, and inlining
• Cache extension, domain sharding, and domain rewriting
• Deferred loading of JavaScript and image resources
• and many others...

Curious to learn more about mod_pagespeed? Check out our GDL episode below, which covers the history of the project, an architectural overview of how mod_pagespeed works under the hood, and a number of operational tips and best practices for deploying mod_pagespeed.