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Documentation
- Page Speed rules (alphabetical)
- Avoid bad requests
- Avoid CSS @import
- Avoid CSS expressions
- Avoid document.write
- Combine external CSS
- Combine external JavaScript
- Combine images using CSS sprites
- Defer loading of JavaScript
- Defer parsing of JavaScript
- Enable compression
- Leverage browser caching
- Leverage proxy caching
- Make landing page redirects cacheable
- Minify CSS
- Minify HTML
- Minify JavaScript
- Minimize request size
- Minimize DNS lookups
- Minimize redirects
- Optimize images
- Optimize the order of styles and scripts
- Parallelize downloads across hostnames
- Prefer asynchronous resources
- Put CSS in the document head
- Remove unused CSS
- Serve resources from a consistent URL
- Serve scaled images
- Serve static content from a cookieless domain
- Specify a character set
- Specify image dimensions
- Use efficient CSS selectors
- mod_pagespeed Filters
- Add Head
- Add Instrumentation
- Async Google Analytics
- Collapse Whitespace
- Combine CSS
- Combine JavaScript
- Combine Heads
- Convert Meta Tags
- Defer JavaScript
- Elide Attributes
- Extend Cache
- Flatten CSS @imports
- Inline @import to Link
- Inline CSS
- Inline JavaScript
- Inline Preview Images
- Insert Google Analytics
- Lazily Load Images
- Minify JavaScript
- Move CSS to Head
- Optimize Images
- Outline CSS
- Outline JavaScript
- Remove Comments
- Remove Quotes
- Rewrite CSS
- Rewrite Domains
- Rewrite Style Attributes
- Sprite Images
- Trim URLs
Page Speed Downloads
This download page presents several different options.- If you are a web developer and would like to evaluate the performance of web pages in order to improve them, please download the Page Speed extension for Google Chrome or Firefox.
- If you'd like to try the Apache 2.2 module, please download mod_pagespeed.
- Performance-minded developers and evangelists that would like to integrate Page Speed in their workflow and their tools should download the Page Speed SDK.
Page Speed extension for Google ChromeNew!
Supported platforms
- Mac OS X (x86 only)
- Linux (x86 and x86-64)
- Windows (XP and up)
Page Speed extension for Firefox
Supported platforms
- Mac OS X (x86 and x86-64)
- Linux (x86 and x86-64)
- Windows (XP and up)
Prerequisites
- Mozilla Firefox 4.0 and higher: download from Mozilla
- Firebug Firefox Add-on 1.6 and higher: download from Mozilla
mod_pagespeed for Apache
Supported platforms
- CentOS/Fedora (32-bit and 64-bit)
- Debian/Ubuntu (32-bit and 64-bit)
- Apache 2.2
To install the packages, on Debian/Ubuntu, please run (as root) the following command:
dpkg -i mod-pagespeed-*.deb apt-get -f install
For CentOS/Fedora, please execute (also as root):
yum install at (if you do not already have 'at' installed) rpm -U mod-pagespeed-*.rpm
Installing mod_pagespeed will add the Google repository so your system
will automatically keep mod_pagespeed up to date. If you don't want Google's
repository, do sudo touch /etc/default/mod-pagespeed before
installing the package.
You can also download a number of system tests. These are the same tests available on ModPageSpeed.com.
Please sign up and let us know your early feedback on this beta release.
Page Speed SDK for Developers
The Page Speed SDK is a reusable C++ library that can be used in a variety of different environments, including browser plugins, bulk data processing pipelines, command-line tools, etc.
See Embedding the Page Speed SDK for more information about integrating the Page Speed SDK.
The applications in the gallery use the Page Speed SDK to provide Page Speed scores and suggestions.