Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

Measure-it: Firefox Add-on for Webpage Dimension Inspection
"Measure-it" is a fast and simple Firefox add-on that allows users to accurately measure the dimensions of elements on any webpage in pixels. With customizable UI and keyboard shortcuts, users can easily draw a ruler across any webpage to check the width, height or alignment of its elements. Please note that this may not work on addons.mozilla.org.
Add-on stats
Manifest V2
By: Trishul
Rating: 4.41
(124)
Weekly download count: 337
Firefox on Android: No
Permissions:
- activeTab
- storage
Size: 27.16K
Email: tr*****@gmail.com
URLs: Website
Full description: See detailed description
Ranking
# 446 ▼ 1
User reviews
Pros
- Super useful
- Interesting and convenient addon
- Runs technically flawless
Cons
- Did not work as expected
- Could not move created rectangle
- Added spam to email address
Most mentioned
- Did not work as expected
- Super useful
- Added spam to email address
User reviews
by 天灭中共退党团队保平安, 2025-02-13
This has added spam to my email address, and I hate it.
by Barry, 2025-01-17
Super useful!
by ZayneH, 2024-11-17
Add-on safety
Risk impact
Measure-it does not require any sensitive permissions.
Risk impact analysis details
- Low Request access to the following domains:
Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Measure-it. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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