Alternatives to W3C Markup Validation Service

  • Total Validator

    Total Validator is an HTML validator, an accessibility validator, a CSS validator, a spell checker, and a broken links checker all rolled into one tool allowing one-click validation of your website.

    Freemium Linux Mac Windows

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  • Scrutiny

    If you need more features than only a website link checker - such as XML sitemap (conforming to the standard protocol), html validity, essential SEO checks such as page title, headings, meta description and keywords - then try Scrutiny.In short, Scr…

    Commercial Mac

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  • HTML Validator

    HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon in the status bar when browsing. The details of the errors are seen when looking the HTML …

    Free Firefox Linux Mac Windows

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  • Batch HTML Validator

    This batch W3C validator tool is perfect to find out HTML errors on websites and check the markup validity of URLs in HTML, XHTML or HTML5. Using a HTML validator tool like this one can save you time and money and help you to see what URLs are in ne…

    Commercial Windows

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  • Rocket Validator

    HTML markup validation is a key factor in web development - it ensures your sites conform to the latest W3C standards and that it's free from errors like unclosed tags or invalid attributes. But, validating a large site, one page at a time, is a ted…

    Commercial Web-Based

    Rocket Validator icon