Total Validator

by Total Validator · totalvalidator.com · Developer Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Check websites are accessible, use valid HTML and CSS, and have no broken links or spelling mistakes. Requires separate application.

Users

3,000

0 in 30 days

Rating

2.9 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#18K

#15K among extensions

Version

6.3

updated 3 Mar 2025

Users

monthly, 3 years

Latest, 15 Oct 2026: 3,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 15 Oct 2026: 7 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Total Validator

Our chrome extension allows you to check web pages or entire sites as you browse. The range of tests includes: Accessibility (WCAG 2.0-2.2, US-508, ARIA 1.3), HTML (over 20 standards, including the latest HTML5), CSS (over 60 different specifications) , a broken links checker, and a multi-language spell checker. It works in combination with a copy of the Total Validator application, which must be installed and running. Go to our website to download either our free Test application (one page validation results), or upgrade to Total Validator Basic (test one page at a time), or Total Validator Pro (fully featured for testing entire websites).