HTML Tag Error Checker

by macha · app.macha795.com · Developer Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Check the HTML start and end tags for problems.

Users

6,000

0 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#13K

#11K among extensions

Version

16.3.1

updated 30 Mar 2026

Users

monthly, 2 years

Latest, 15 Oct 2026: 6,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 years

Latest, 15 Oct 2026: 1 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 HTML Tag Error Checker

This extension displays errors in the HTML code of the page you are viewing, such as mistakes in the opening and closing tags. ## Main Features - Displays results in a separate tab - Shows the number of errors on the icon - Automatic checking - Settings for sites you want to automatically check - Exclusion settings for specified sites - Custom warning rules - HTML File Analysis ## Caution The code is checked using JavaScript, so no data is sent externally. Behavior may be unpredictable on pages that use forms, such as login screens.