HTML validator for Firefox

Mort posted a link to a very handy little firefox addon.
Based on Tidy (which I mentioned recently) the extension checks sites for valid HTML as you browse.
If there are any errors or warnings an icon in the corner subtly alerts you to them. Double-clicking on the icon brings up a screen with a lot more detail.
It’s a very nice little addition, though I don’t understand why the developer hasn’t put it in the official firefox extensions’ repository.

By Michele Neylon

Michele is founder and CEO of Irish hosting provider and domain name registrar Blacknight.

8 comments

  1. Hrm. I’ve been trying it out and its not perfect. It seems to be the fault of Tidy rather than the extension. It gives warnings on nested tags, and on href target attributes beginning with underscores. The w3c validator says that both of these are fine. Still, its better than nothing 🙂

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