Best Practices for Speeding Up Your Web Site

1. 
   

2. Reduce DNS Lookups

3. Minify JavaScript and CSS

4. Avoid Redirects

5. Remove Duplicate Scripts

6. Configure ETags

7. Make Ajax Cacheable

8. Flush the Buffer Early

9. Use GET for AJAX Requests

10. Post-load Components

11. Preload Components

12. Reduce the Number of DOM Elements

13. Split Components Across Domains

14. Minimize the Number of iframes

15. No 404s

16. Reduce Cookie Size

17. Use Cookie-free Domains for Components

18. Minimize DOM Access

19. Develop Smart Event Handlers

20. Choose <link> over @import

21. Avoid Filters

22. Optimize Images

23. Optimize CSS Sprites

24. Don't Scale Images in HTML

25. Make favicon.ico Small and Cacheable

26. Keep Components under 25K

27. Pack Components into a Multipart Document

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Thanks,
Chandrashekhar.