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

Measure-it is available to install from Firefox Browser Add-ons and for download from this page. It has 81 active users The latest version is 2.1resigned1, and it was published 22 days ago.

Install from Firefox Browser Add-ons
View source code
Total download count: 0 (Only count downloads from Firefox-Stats)
All available versions

You can find the current and older versions of Measure-it here. You can download the archived versions or inspect their source codes.

As a free user, you can only download the latest version.

Upgrade to download older versions
2 version available for download.
How to install Measure-it from an XPI file
  1. Simply drag-and-drop the XPI into Firefox to install the add-on.
How to install Measure-it from a ZIP file
  1. Download the Measure-it ZIP file
  2. In Firefox browser, go to about:addons to open Add-ons Manager
  3. Click on , then select Install Add-on From File
  4. Select the Measure-it ZIP file from step 1. Measure-it is now installed on your browser.