Markup Validator

Check the markup of the current page using various markup validators

Markup Validator - Check HTML Markup

Markup Validator is a Chrome extension that enables you to check the markup of the current page or any HTML code. It provides the ability to use different markup validators for thorough validation. The extension can help identify and fix HTML errors and ensure standards compliance.
Install from Chrome Web Store

Extension stats

Manifest V3
Users: 80
Version: 1.0.7 (Last updated: 2025-03-04)
Creation date: 2021-11-14
Permissions:
  • storage
  • tabs
Size: 55.43K
URLs: Website
Full description: See detailed description

Other platforms

Not available on Android
Not available on Firefox
Not available on Edge

Extension safety

Risk impact

Markup Validator requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

We don't have sufficient data to confidently determine the risk likelihood of Markup Validator. Use it at your own risk.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
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  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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Similar extensions

Here are some Chrome extensions that are similar to Markup Validator: