CodeTools
WebPagetest
Website speed test from multiple locations using real browsers.
CodeTalks
Taming the Mobile Beast
What to be aware of when developing for the mobile web.
CodeTools
Progressive JPEGs FTW!
WebPagetest now warns you for any JPEGs that are not progressive.
CodeTools
Measuring performance of the user experience
WebPagetest will now report User Timings in waterfalls.
CodeSkills
Web Performance Waterfalls from 10,000 Feet by Patrick Meenan
Patterns to look for.
CodeTools
Testing with Realistic Networking Conditions
Tools to simulate user bandwidth and test performance.
CodeSamples
Fast Google Fonts with Cloudflare Workers
How to fix the performance of Google Fonts.