1.0 A must read note from Google
2.0 Website Speed and Performace
2.2 Pingdom Website Speed Test – one of the most reliable website speed tester, you can test the load time of your page, analyze it and find bottlenecks.
2.4 GTmetrix – provides result right away and suggest necessary improvement for your website
2.5 Weboptimization - analyzes and gives detailed recommendations for site improvement as well as your web page speed report.
3.0 Image Optimization
- JPG, 60 quality – 32K
- PNG-8, 256 colors – 37K
- GIF, 256 colors – 42K
- PNG-24 – 146K
5.0 Performance Best Practices
Not recommended to include in your HTML document:
5.1.3 Combine Rules and use it once in CSS.