Firefox Browser Add-ons
  • Extensions
  • Themes
    • for Firefox
    • Dictionaries & Language Packs
    • Other Browser Sites
    • Add-ons for Android
Log in
Preview of Layout Debugger

Layout Debugger by CakhiaTV

Firefox extension for highlighting DOM elements to better debug layout issues

0 (0 reviews)0 (0 reviews)
1 User1 User
Download Firefox and get the extension
Download file

Extension Metadata

About this extension
Firefox extension for highlighting DOM elements to better debug layout issues
  • Identifying too-wide overflowing objects.
  • Distinguishing block from inline elements.
  • Helping to keep track of element alignment.

Adds a distinct colour outline to each visible DOM element, as well as providing a visual prompt for overflowing divs.

display: block; => blue;
display: inline; => purple;
overflowing the viewport => red!
etc..
Rated 0 by 0 reviewers
Log in to rate this extension
There are no ratings yet

Star rating saved

5
0
4
0
3
0
2
0
1
0
No reviews yet
Permissions and data

Required permissions:

  • Access your data for all websites
Learn more
More information
Add-on Links
  • Copy add-on ID
Version
1.7
Size
257.21 KB
Last updated
a year ago (May 4, 2025)
Related Categories
  • Web Development
  • Search Tools
License
Mozilla Public License 2.0
Version History
  • See all versions
Add to collection
Report this add-on
Go to Mozilla's homepage

Add-ons

  • About
  • Firefox Add-ons Blog
  • Extension Workshop
  • Developer Hub
  • Developer Policies
  • Community Blog
  • Forum
  • Report a bug
  • Review Guide

Download

  • Download Firefox
  • Windows
  • macOS
  • iOS
  • Android
  • Linux
  • All

Latest Builds

  • Nightly
  • Beta

Firefox for Business

  • Enterprise

Community

  • Connect
  • Contribute
  • Developer

Follow

  • Instagram
  • YouTube
  • TikTok
  • Bluesky
  • Podcast
  • Privacy
  • Cookies
  • Legal

Except where otherwise noted, content on this site is licensed under the Creative Commons Attribution Share-Alike License v3.0 or any later version.