A HTML5 validation library, using a JavaScript port of the excellent TIDY library

Latest Version

Version
1.4
Update
August 28, 2012
Size
1.0MiB
Developer
kingsquare.nl
Category
Users
1,000+
Rating
2.86111 ★
Manifest Version
2
Web Store Status
Languages Support
English
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Permissions
Http://*/*
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Kingsquare HTML Validator Extension

This extension brings the the TIDY HTML Validation library to your browser. You will no longer need remote services to validate your HTML(5). This is the first offline HTML validator for Chrome.

For more information on the project, see http://www.kingsquare.nl/html-validator

** PLEASE NOTE **

Please restart your browser after installing the extension.

Open the development tools panel to activate the validator. Every page will get validated automatically, check the flag at the end of your address bar to see the current status. See the last tab of the development tools to get a full report.
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Source Manifest.json

{"update_url":"http://clients2.google.com/service/update2/crx",\t"name": "Kingsquare HTML Validator",\t"version": "1.4",\t"manifest_version": 2,\t"description": "A HTML5 validation library, using a JavaScript port of the excellent TIDY library",\t"devtools_page": "devtools.html",\t"background":{\t\t"scripts":["background.js"]\t},\t"icons": {\t\t"16": "16x16.png", "48": "48x48.png", "128": "128x128.png"\t},\t"page_action": {\t\t"default_icon": "loading.gif",\t\t"default_title": "Checkout Development Tools / HTML validator for more info"\t},\t"content_scripts": [{\t\t"matches": ["http://*/*", "https://*/*"],\t\t"js": ["content.js"]\t}],\t "permissions": [\t\t "http://*/*"\t ],\t "offline_enabled": true}
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User reviews

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Patrick Gallagher (ID: 000000e557cb9b64) Voted 1 ★ - Updated 02/28/2019 Might like it if I could get it to do something. Does not seem to check anything.

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Lodewijk Abrahams (ID: 0000000d38340e89) Voted 2 ★ - Updated 11/27/2017 Why does this module not qualified the display video's at the nu.nl?

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Paul Brown (ID: 0000005ff0047bb3) Voted 3 ★ - Updated 06/23/2016 too finicky Should just show errors

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maksim (ID: 0000003c7c38ddd7) Voted 4 ★ - Updated 10/29/2015 Good plugin, but the output format is **horrible**...

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Raymond DeCampo (ID: 000000181aba6698) Voted 2 ★ - Updated 10/15/2015 Tried this on a site that passed the W3C validator and got spurious warnings (e.g. no DOCTYPE even though DOCTYPE existed, warnings about leftmargin on when there was no such atribute). Also does not work on AJAX sites as far as I could see. Final nail is that if developer tools were not already open, requires a reload to validate.