JS minifier from Google. Nice UI for doing it, also has an API for doing it programmatically.
#performance
Best Practices for Speeding Up Your Web Site
Best Practices for Speeding Up Your Web Site
“The Exceptional Performance team has identified a number of best practices for making web pages fast. The list includes 35 best practices divided into 7 categories.”
MySQLTuner.pl
Perl script that scans a MySQL install and suggests different settings that might be more optimized for its load profile.
Public API Status
Cool service that checks on the availability of different web services APIs.
A HOWTO on Optimizing PHP
Extensive tutorial on tuning PHP for performance on the system level (not just coding tips).
Closure Compiler/Library
“Closure Compiler is a JavaScript optimizer that compiles web apps down into compact, high-performance JavaScript code. The compiler removes dead code, then rewrites and minimizes what’s left so that it will run fast on browsers’ JavaScript engines.”
SpriteMe
“Background images make pages look good, but also make them slower. Each background image is an extra HTTP request. There’s a fix: combine background images into a CSS sprite. But creating sprites is hard, requiring arcane knowledge and lots of trial and error. SpriteMe removes the hassles with the click of a button.”
Browserscope
“Browserscope is a community-driven project for profiling web browsers. The goals are to foster innovation by tracking browser functionality and to be a resource for web developers.”
Real World Web: Performance & Scalability
Real World Web: Performance & Scalability
Awesome (and very long) slideshow on all sorts of scalability and performance techniques for massive websites/services.
PHP Speedy
“PHP Speedy is a script that you can install on your web server to automatically speed up the download time of your web pages. Here’s an example, from a test page:”