What is HTML Validator?

HTML Validator is a Chrome extension developed by https://gueury.com, and its main feature is "Add HTML Validator in Developer Tools".

Extension Screenshots

Download HTML Validator Extension CRX File

Download HTML Validator extension files in crx format, manually install Chrome extensions in the browser, or share the crx files with friends to easily install Chrome extensions.

Extension Usage Instructions

This is the of HTML Validator extension for Chrome Manifest V3.
It checks the code, syntax, of your HTML 5 pages.

HTML Validator for Chrome is a browser extension that adds HTML validation inside Developer Tools of Chrome. The number of errors of a HTML page is seen with an icon in the browser status bar. The details is seen in the developer tools.

The extension is based on HTML Tidy. The algorithm was originally developed by the Web Consortium W3C. The algorithm is embedded inside your browser and makes the validation locally on your machine, without sending HTML to a third party server.

HTML Tidy is a helpful program that tries to help people to correct their HTML errors. It finds HTML errors and classifies them in 3 categories:
* errors: HTML errors that Tidy cannot fix or understand.
* warnings: HTML errors that Tidy can fix automatically
* (optional) accessibility warnings: HTML warnings for the 3 priority levels defined in W3c WAI

There is also an automatic "Clean up" button that will do his best to propose you a cleaned version of your page, without errors.

For any question, mail me at [email protected] or log a bug in:
> https://gitlab.com/mgueury/html_validator/issues

Extension Basic Information

Name	HTML Validator
ID	mpbelhhnfhfjnaehkcnnaknldmnocglk
Official URL	https://chromewebstore.google.com/detail/html-validator/mpbelhhnfhfjnaehkcnnaknldmnocglk
Description	Add HTML Validator in Developer Tools
File Size	2.5 MB
Installation Count	46,461
Current Version	0.9.9.8
Last Updated	2022-12-28
Publish Date	2018-05-28
Rating	3.46/5 Total 35 Ratings
Developer	https://gueury.com
Email	[email protected]
Payment Type	free
Extension Website	https://www.gueury.com/mozilla/
Help Page URL	https://www.gueury.com/mozilla/faq.html
Supported Languages	en-US
manifest.json
{ "update_url": "https:\/\/clients2.google.com\/service\/update2\/crx", "name": "HTML Validator", "version": "0.9.9.8", "manifest_version": 3, "description": "Add HTML Validator in Developer Tools", "devtools_page": "tidy_devtools.html", "options_page": "common\/tidy_option.html", "homepage_url": "http:\/\/www.gueury.com\/mozilla", "web_accessible_resources": [ { "resources": [ "*" ], "matches": [ "" ] } ], "background": { "service_worker": "tidy_service_worker.js" }, "icons": { "16": "skin\/default_icon16.png", "48": "skin\/default_icon48.png", "128": "skin\/default_icon128.png" }, "action": { "default_icon": "skin\/disabled.png", "default_title": "HTML validator", "default_popup": "tidy_popup.html" }, "content_scripts": [ { "matches": [ "" ], "js": [ "tidy_content.js" ] } ], "permissions": [ "storage", "activeTab", "clipboardWrite", "webNavigation", "scripting" ], "host_permissions": [ "" ], "offline_enabled": true }