Rated 1 out of 5 stars

per Andreas Schönefeldt el gen. 9, 2012 ·

Hi,

I think this adon will become useable, if you can applay it to an actual website and do not have to enter it in a search field. Would be even better as a plugin to firebug.

Best wishes
Andreas, Web Developer

per halilim (desenvolupador) a gen. 9, 2012 ·

Yes, but it is in the category "Search Tools" and it is just an XML search plugin that enables you to check a given address from your address bar for convenience :) In order to make a complete plugin, a brand new plugin should be started. And many such plugins are already available: https://addons.mozilla.org/en-US/firefox/search/?q=html+validation&appver=&platform=