HTML Validator icon

HTML Validator

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Extension Delisted

This extension is no longer available in the official store. Delisted on 2025-09-16.

Extension Actions

CRX ID
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Status
  • Minor Policy Violation
  • Removed Long Ago
  • Unpublished Long Ago
  • No Privacy Policy
Description from extension meta

An extension to validate the webpage's html using a validation service

Image from store
HTML Validator
Description from store

A small extension to validate the markup of current tab.

It can be used while developing the website to check for errors & maintain standards in your code. It sends the current tab's HTML to the https://validator.w3.org/ web service in order to check it for errors.

All the error found are displayed in a list to facilitate the refactoring of the code, the error part is highlighted & the source code is also displayed where the error is found

Latest reviews

Zihad Hosan
I was looking for such a kind of extension and I'm lucky I found it. Great tool to debug w3 validation. Thank you!!!
Aml Slmn
Extension très utile, merci pour ton travail ^^ Very useful extension, thanks for your job :)
Данил Ткачук
Not working with localhost (gulp server)
Scott Keller
It seems to only print errors, would be great if it also showed warnings.
Vladimir Shapovalov
It works also with local html 👍🏻
Михаил Мальчиков
First of 4 validation extensions what i tried that works
Richie Green
Effective and easy to use. I would love if it worked offline.