First, some clarification.
YSlow is a pluggin for
Firebug, not Firefox. It's installed as a Firefox pluggin, but it actually enhances Firebug. Accordingly it requires Firebug to be installed.YSlow adds a new YSlow tab to Firebug and in this tab it rates your page on the scale A to F, based on compliance with
Yahoo's performance rules and provides a link to each rule, and lists each component it believes could be improved. Each of these "rules" have their own weighting too.This all sounds good, so I thought I'd put it to the test against my sites to see what it had to offer, and see what changes I could make to improve the overall impression of the performance of my sites.
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