Created
October 7, 2010 20:23
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From slide 22 of http://www.fischmarkt.de/2010/05/very_high_performance_websites_the_next.html Many of these can be checked with the YSlow Firebug extension. | |
* Make fewer HTTP requests | |
* Use a Content Delivery Network (CDN) | |
* Add Expires headers | |
* Compress components with gzip | |
* Put CSS at top | |
* Put JavaScript at bottom | |
* Avoid CSS expressions | |
* Make JavaScript and CSS external | |
* Reduce DNS lookups | |
* Minify JavaScript and CSS | |
* Avoid URL redirects | |
* Remove duplicate JavaScript and CSS | |
* Configure entity tags (ETags) | |
* Make AJAX cacheable | |
* Use GET for AJAX requests | |
* Reduce the number of DOM elements | |
* Avoid HTTP 404 (Not Found) error | |
* Reduce cookie size | |
* Use cookie-free domains | |
* Avoid AlphaImageLoader filter | |
* Do not scale images in HTML | |
* Make favicon small and cacheable |
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