This week, we look at Firebug - perhaps the most useful Firefox extension ever made. If you use the (included) Web Developer toolbar in Firefox for debugging JavaScript and CSS issues, then stop - this one is much more useful.
Weighing in at just over 250kb to download, Firebug allows you to view and edit HTML and CSS, as well as debug Javascript all in real time. This is one extension any web developer would be ashamed to live without. Firebug quietly sits in the Firefox status bar and eagerly awaits your click to unleash it’s powerful features.



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