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Firebug
Firebug integrates with Firefox to put a wealth of development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page. |
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Markup Validation Service
This is the W3C Markup Validation Service, a free service that checks Web documents in formats like HTML and XHTML for conformance to W3C Recommendations and other standards. |
58 |
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Web Developer (Firefox extension)
Installation and troubleshooting notes on Web Developer |
67 |
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ColorZilla (Firefox extension)
I shudder to think back on the huge PITA of getting hex codes for colors before this lovely extension... taking a screenshot, pasting it into Photoshop, using the eyedropper tool... how much time have I saved because of it? (Answer: lots.) |
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