Simple HTML Validator

by james.fuller@bvsd.org · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Sends the current tab's URL to the w3c validator service to display the validation report in a new tab

Users

+5 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#104K

#86K among extensions

Version

1.1

updated 29 Nov 2024

Users

monthly, 2 years

Latest, 16 Oct 2026: 57 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 years

Latest, 16 Oct 2026: 0 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 Simple HTML Validator

Provides web developers with quick one-click access to the w3c validation service to check HTML and CSS syntax in a document. When clicked, the URL of the current tab is sent to validator.w3.org/ and the results of the validation check are displayed in a new tab.