Outline HTML Elements

by maxontech · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Outline HTML elements with a colorful border without affecting the layout to inspect website structure.

Users

1,000

0 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#26K

#22K among extensions

Version

1.0.4

updated 1 Apr 2025

Users

monthly, 2 years

Latest, 15 Oct 2026: 1,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 2 years

Latest, 15 Oct 2026: 8 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 Outline HTML Elements

Outline HTML elements without affecting the layout to inspect the structure of websites and debug CSS. Features: 📐 Press and hold the key-bind to show the outline of HTML elements. ⚙️ Customizable key-bind in the extensions menu. 🎨 Choose outline colors for each HTML element individually. 🔄 No layout changes to the website. 👍 Lightweight and does not affect the performance of the browser. 📖 The extension is open-source and free to use. 🚫 The extension does not track any user data. 📺 The extension is free of ads. This extension is free and open source: https://github.com/maxontech/outline-html-elements This extension is developed and maintained by Max: https://www.maxrohowsky.com/