Performance analysis for websites – Page Speed from Google

Yesterday I discovered a very nice tool for optimizing websites – Page Speed from Google. It installs as a menu entry in the Firebug plugin. Running this tool on several websites (including the Romania’s largest newspaper) shows very interesting results -a lot of things to improve. I’m sure that some of them are very hard to find without an automated tool.

Some suggestions for www.evz.ro (the Romanian newspaper). They could save 200kbytes just by using proper sized images.

Enable gzip compression
Leverage browser caching
Combine external JavaScript
Minify JavaScript
Optimize images
Optimize the order of styles and scripts
Parallelize downloads across hostnames
Minimize DNS lookups
Specify image dimensions
Remove unused CSS
Serve static content from a cookieless domain
Minimize cookie size
Use efficient CSS selectors

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