[LINK] Google 'mod_pagespeed'

stephen at melbpc.org.au stephen at melbpc.org.au
Sun Nov 7 15:00:20 AEDT 2010

Google writes: 

"We just launched a new open-source Apache module called mod_pagespeed 
that any webmaster can use to quickly and automatically optimize their 



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 

mod_pagespeed includes several filter that optimize JavaScript, HTML and 
CSS stylesheets. It also includes filters for optimizing JPEG and PNG 
images. The filters are based on a set of best practices known to enhance 
web page performance. Webmasters who set up mod_pagespeed in addition to 
configuring proper caching and compression on their Apache distribution 
should expect to see an improvement in the loading time of the pages on 
their websites. 

Three steps to mod_pagespeed

mod_pagespeed is now available as a downloadable binary for i386 and x86-
64bit systems and as open-source code accessible through svn. It 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 

mod_pagespeed currently only supports Apache 2.2. There are no plans to 
support earlier versions of Apache, but patches are welcome. 

Serve your web pages with Apache and mod_pagespeed

Follow the instructions provided to configure mod_pagespeed with Apache 
2.2. In addition, configure caching and compression to get the maximum 
benefit out of your HTTP Server. 

Get familiar with the configuration. There are several filters provided 
as part of this module, including some exciting experimental features 
such as CSS outlining. With some experimentation, you can fine-tune the 
configuration to get the maximum benefit in terms of page performance. 

Learn more about Web Performance

The field of web performance is a complex space. While there are many 
interesting books, blog posts and discussion forums, we provide here a 
set of pages related to web performance and organize it in terms of 
contribution to the speed of a web page, whether by serving less bytes -
through better compression or caching-, minimizing round-trips and 
optimizing the order of resource download for the browser. 

This documentation is by no means complete or final. We update it 
regularly with new rules and updates to how the rules apply to modern 

Help make mod_pagespeed better! Contribute to the open source project:




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