Measure-it

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

By: Trishul
Daily users: 26,787
98
Version: 2.2.0 (Last updated: 2019-07-02)
Version code: 4611228
Creation date: 2017-09-06
Weekly download count: 378
Firefox on Android: No
Manifest version: 2
Permissions:
  • activeTab
  • storage
Size: 27.16K
URLs: Website

Other platforms

Measure-it (v3.0.0)
3.55 (38) 80,000
Not available on Android
Measure-it (v2.2.0)
3.70 (18) 15,571
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Add-on summary

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

Keyboard shortcuts Mac - Command+Shift+O Windows/Linux - Alt+Shift+M This can be changed from Add-on preferences. Features

  • Fast
  • Simple
  • Customizable UI/shortcuts from preferences
Note - This may not work on addons.mozilla.org

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Super useful
  • Interesting and convenient addon
  • Runs technically flawless
  • First class tool for measurements
Cons
  • Added spam to email address
  • Did not work as expected, causing frustration
  • Rectangle created cannot be moved
Most mentioned
  • Does not function as expected
  • Causes spam-related issues
  • User-friendly for measuring needs
User reviews

This has added spam to my email address, and I hate it.
by Barry, 2025-01-17

Super useful!
by ZayneH, 2024-11-17
View all user reviews

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.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
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