DOM Mutation Debugger

Visualise DOM mutations directly on your page - no need to keep DevTools open.

As of June 2026, DOM Mutation Debugger has 23 users and a 5.00/5 rating from 1 reviews in the Developer Tools category.

Developer Tools

Chrome Web Store ↗.crx

Users+9.5%

Rating0%

5.00

1 reviews

Reviews0%

Version

1.0.0

Manifest V3

History

4 snapshots

Tracking since Apr 18, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 18, 2026	21	5.00	1	1.0.0
Apr 27, 2026	21	5.00	1	1.0.0
May 7, 2026	23	5.00	1	1.0.0
May 23, 2026	21	5.00	1	1.0.0
Now	23	5.00	1	1.0.0

Permissions & access

Permissions: scriptingactiveTabstorage
Host access: None declared

Screenshots

About

Have you ever noticed elements blinking in DevTools with every change?
Now, all those changes visualised directly on your website's UI!

Features
- Highlights elements as changes happen.
- Tooltips nearby display detailed mutation info.
- Click on a tooltip saves mutation data as a global variable.
- Customisable behaviour:
   - Filter by mutation type
   - Group mutations by nearest custom component
   - Adjust throttle.
- Supports light and dark themes.
- Sentry Mode for silent continuous monitoring of rapid re-renders.

Privacy
This extension does not collect or share any personal data.
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Documentation

Sentry mode
- Pauses visualisation until a single element changes rapidly.
- Perfect for catching unexpected re-renders in a loop.
- You can save any discovered issues and return later to resolve them.

Tooltip structure (from top to bottom)
- Element name.
- Number of mutations emitted by the element.
- Mutation type (child added/removed, text, attribute).
- Selector.

Global object $dmd
- Stores up to 10 latest saved mutations.
- Each record contains reference to a mutated element, selector of the element and mutation type.