What are the guidelines given by Yahoo for website performance?
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The following are the guidelines given by Yahoo for increasing your website loading speed:
1. Minimize http requests.
2. Use a content delivery network.
3. Add an expires or a Cache-Control Header.
4. Gzip components.
5. Put Stylesheets at the top
6.Put Scripts at the Bottom.
7. Avoid CSS Expressions.
8. Make JavasScript and CSS external.
9. Reduce DNS Lookups.
10. Minify JavaScript and CSS.
11. Avoid Redirects.
12. Remove Duplicate Scripts.
13. Configure ETags.
14. Make Ajax Cacheable.
15. Flush the Buffer early.
16. Use GET for AJAX Requests.
17. Post load components,
18. Pre-load components.
19. Reduce the number of DOM Elements.
20. Split components across domains.
21. Minimize the number of iframes.
22. Reduce Cookie Size.
23. Use Cookie-free Domains for components.
24. Minimize DOM Access.
25. Develop Smart Event Handlers.
26. Choose <link> over @import.
27. Avoid Filters.
28. Optimize Images.
29. Optimize CSS Sprites.
30. Don’t scale images in HTML.
31. Make favicon.ico Small and Cacheable.
32. Keep Components under 25K.
33. Pack Components into a Multipart Document.
34. Avoid Empty Image src.
Answered Date 11-May-17 by Arnav
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