The State of HTML5 Validation According to Tristan Louis


tristanlouis150.pngTristan Louis is a colleague and insightful analyst. Over the weekend, he took a look at the top 20 sites according to Alexa and ran them through the W3C HTML validator to see who is playing by the rules and who still has some catching up to do.

Surprisingly, was the sole site among the top 20 to completely pass, and Amazon had the most page errors – more than 500 of them with more than 100 particular warnings – “showing that dis­regard for standard com­pliance does not seem to have an impact on economic performance,” he says in his blog post.


Most of the top 20 sites have adopted the UTF-8 encoding type that supports multiple languages by default.

While the W3C validator isn’t the last word (or even the first word) when it comes to HTML5 accuracy (as we have covered before here), it is an interesting comparative metric.

Louis then went on to examine the code of many top Web 2.0 companies to see how they compared. All of them are using UTF-8, and all of them had errors with the validator. Only five out of the 11 sites have made the transition to HTML5, with the rest using XHTML or HTML v4. As he says, “It looks like there is still much room for improve­ment in the world of HTML validation.”


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By: Dr. Augustine Fou Monday, August 22nd, 2011 news

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Dr. Augustine Fou is Digital Consigliere to marketing executives, advising them on digital strategy and Unified Marketing(tm). Dr Fou has over 17 years of in-the-trenches, hands-on experience, which enables him to provide objective, in-depth assessments of their current marketing programs and recommendations for improving business impact and ROI using digital insights.

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