Performancing site load time, optimize sites by compression

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Plugin CssJsCompress can automatically optimize external resources like CSS and JavaScript,
which can reduce both the size and number of requests made to your website.
CSS files can be aggregated and compressed into a single file,
while JavaScript files are only aggregated (but not compressed).
These optimizations may reduce server load, bandwidth requirements, and page loading times.
Major Features:
1. Css aggregation and optimization.
2. Javascript aggregation.
3. GZip aggregated Css and Javascript files. Only GZip one time, then load from cache next time.
4. Client’s side cache.

http://www.joomlatags.org/tips-tricks/performance.html

Best Practices for Speeding Up Your Web Site

  • Minimize HTTP Requests
  • Use a Content Delivery Network
  • Add an Expires or a Cache-Control 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 and CSS
  • Avoid Redirects
  • Remove Duplicate Scripts
  • Configure ETags
  • Make Ajax Cacheable
  • Flush the Buffer Early
  • Use GET for AJAX Requests
  • Post-load Components
  • Preload Components
  • Reduce the Number of DOM Elements
  • Split Components Across Domains
  • Minimize the Number of iframes
  • No 404s
  • Reduce Cookie Size
  • Use Cookie-free Domains for Components
  • Minimize DOM Access
  • Develop Smart Event Handlers
  • Choose <link> over @import
  • Avoid Filters
  • Optimize Images
  • Optimize CSS Sprites
  • Don’t Scale Images in HTML
  • Make favicon.ico Small and Cacheable
  • Keep Components under 25K
  • Pack Components into a Multipart Document

http://developer.yahoo.com/performance/rules.html

Best Practices for Speeding Up Your Web Site

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