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This is incredible. At first I thought it was not working right on pages that had been checked with W3C. But then I realized it was finding errors that W3C missed! Thanks guys.
I have been using this for quite a while and I am really fond of it. Is there any chance the latest version (which supports SGML testing and therefore XHTML/Strict) will be available for Linux?
Right now I have to switch to a windows PC for my final testing - would be nice to do that from my development PC.
Thanks for a great tool!
I might be the pickiest person I know when it comes to HTML validation. I have been willing to pay $150 for the CSE HTML Validator in the past because it would catch nesting errors that other validators would miss (it's still great for batch validations). But I don't need that any more - I have something better - the Firefox Html Validator.
It's so darn convenient that I can test my site and just glance at the little icon at the bottom of each page to look for HTML errors. They have made great strides forward in the past few months and now I rely on it for everything. Except for batch validations, this is going to put every other validator out of business.
The suggestions for how to fix errors are often very insightful and relevant. It teaches you how to write good HTML as you use it.
And speaking of using it, that's my only complaint. Now that it's so easy to write valid HTML, why doesn't everyone do it? There is no longer any excuse!
Thank you, thank you, thank you for creating this!
as a junior web-developer i'm using this tool(along with the http://validator.w3.org/ online validator) to validate my pages. it works great.
still i'd like to suggest some improvements though, because my page validates at http://validator.w3.org/, but this validator gives a warning:
anyway, great tool and i advice any web developer to use it!
I think every web developer have to use this tool!
Thx a lot for this plug-in!
Simply the best of all available validators for FireFox!
Hi Timki, the view source speed problem is only happening when the page is very very big. To have an immediate answer, remove the "line highlighting" and the "line numbers" in options.
Very good extension, extremely useful for web developers, except for one major problem which is that it runs faaaar too slow. The 'view source' window takes absolutely ages to come up. Needs work.
It's a useful extension but it lacks XHTML strict validation for example, instead you have to manually use the W3C online validation tool. But the extension is great to quickly check for HTML/CSS websites or accessibility issues.
Such a great add-on, right up there with Firebug and Web developer extension as essential add-ons. The new OpenSP validator as used by the w3c validator is a fantastic new addition.
Certainly alot easier to use than installing the w3c validator on a windows dev machine. Keep up the great work.