Resources
Books
High Performance Web Sites
Steve Souders
Even Faster Web Sites
Steve Souders
Tools
Browser Tools
The browser plugins Yahoo YSlow, Google Page Speed, and MySpace’s Performance Tracker are used to profile a website and find problems. The Chrome and Safari browsers include waterfall charts and performance information in their developer tools.
Services
The free WebPagetest service provides great waterfall charts and performance info using remotely hosted Internet Explorer.
Zoompf’s Web Performance Optimizer service scans your entire website and provides a comprehensive list of recommendations and improvements.