Is HTML Validation free?

Yes, HTML Validation is free to use. It is available as a free plugin on WordPress.org.

How many websites use HTML Validation?

HTML Validation has 400 active installations as tracked by WordPress.org.

What are the best HTML Validation alternatives?

Popular alternatives to HTML Validation include Ally – Web Accessibility & Usability, Auto Image Attributes From Filename…, Accessibility by UserWay. You can compare them side-by-side on our comparison pages.

Does HTML Validation work with the latest WordPress?

HTML Validation has been tested up to WordPress 6.8.5. It requires WordPress 4.6+ and PHP 5.5+.

HTML Validation — Reviews, Rating & Alternatives (2026)

Name: HTML Validation
Rating: 1 (1 reviews)
Author: seshelby

As of April 2026, HTML Validation is a WordPress accessibility plugin with 400 active installations and a 1/5 rating from 1 reviews. It has been downloaded 9.1K+ times in total. Requires WordPress 4.6+ and PHP 5.5+. Available on WordPress.org since 2020. Top alternative: Ally – Web Accessibility & Usability.

1/51 reviews

400active installs

9.1K+total downloads

6 yearssince 2020

Overview

The HTML Validation Plugin runs in the background, identifies and reports HTML validation errors on your website. Once activated, the HTML Validation plugin uses WordPress cron to scan your website content in the background. A progress bar on the report screen indicates scan progress. HTML Validation is provided by Validator.nu. Please refer to the provided privacy policy and terms of use. Posts may also be scanned using the Validate HTML link provided on the “All Posts” screen.

The HTML Validation Pro extension adds options to automatically correct many HTML Validation issues. This one of a kind plugin could save you hundreds of hours of work finding and correcting HTML validation issues. Visit our website to learn more and add the Pro Extension

Read full description on WordPress.org