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Load time optimization

It seems Google takes page load time seriously. On Google Code page you can download and install useful FF plugin to check loading speed (docs)

Google categorized five categories that describe aspects of page load optimization:

  • 1) Optimizing caching — keeping your application's data and logic off the network altogether
  • 2) Minimizing round-trip times — reducing the number of serial request-response cycles
  • 3) Minimizing request overhead — reducing upload size
  • 4) Minimizing payload size — reducing the size of responses, downloads, and cached pages
  • 5) Optimizing browser rendering — improving the browser's layout of a page

Google suggested source that gives optimization rules:

  • Make Fewer HTTP Requests
  • Use a Content Delivery Network
  • Add an Expires Header
  • Gzip Components
  • Put Stylesheets at the Top
  • Put Scripts at the Bottom
  • Avoid CSS Expressions
  • Make JavaScript and CSS External
  • Reduce DNS Lookups
  • Minify JavaScript
  • Avoid Redirects
  • Remove Duplicate Scripts
  • Configure ETags
  • Make AJAX Cacheable

As page optimization is part of SEO - now it is time to revise your approach to on-site optimization, as high-speed broadband internet with a slow sites is nonsense.

Also, don't forget of online loading speed checking tools, for example, Pingdom, Alertsite, Webo. Even a simplest Website Speed Test can be useful in some cases.

Good reading is Yahoo! YSlow.

16-05-2010

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