A list of website speed optimisation tools/add-ons/plugins for the Firefox web-browser.


FireBug is the classic web developers site analysis tool.

Visit GetFireBug

Page Speed

Google’s Firefox/FireBug plugin that adds an extra tab into FireBug allowing you to access advanced page speed information and tips.

Visit Page Speed @ Google Code


Yahoo’s FireBug add-on that provides advanced tips for high performance websites.

Visit YSlow

lori (Life-of-request info)

Lori provides various load time stats straight into the Firefox status-bar.

Visit lori @ Firefox Add-ons


Hammerhead shows web page load-time in the Firefox status-bar.

Visit Hammerhead