1. Flush the buffer early  [server] 
2. Use GET for AJAX requests  [server] 
3. Post-load components [content] 
4. Preload components [content] 
5. Reduce the number of DOM elements [content] 
6. Split components across domains [content] 
7. Minimize the number of iframes[content] 
8. No 404s[content] 
9. Reduce cookie size[cookie] 
10. Use cookie-free domains for components[cookie] 
11. Minimize DOM access[#] 
12. Develop smart event handlers[#] 
13. Choose  over @import[css] 
14. Avoid filters[css] 
15. Optimize images[images] 
16. Optimize CSS sprites[images] 
17. Don't scale images in HTML[images] 
18. Make favicon.ico small and cacheable[images] 
19. Keep components under 25K[mobile] 
20. Pack components into a multipart document[mobile]