Dimensions

Name: Dimensions
Rating: 4.5294 (17 reviews)
Author: Felix Niklas

By: Felix Niklas

A tool for designers to measure screen dimensions

Download

Install

Features & Capabilities

Dimensions is a powerful Chrome extension tailored for designers needing precise measurements of screen elements. It measures distances from your mouse pointer up, down, left, and right until it reaches an element border, making it perfect for analyzing spaces between images, buttons, text, icons, and more directly within your browser.

Designed to simplify design workflows, Dimensions supports measuring elements on mockups in PNG or JPEG format by simply opening them in Chrome and activating the extension. Features like area boundary measurements, including radius calculations for circles, and a convenient ALT + D keyboard shortcut enhance productivity. As an open-source tool hosted on GitHub, designers and developers can contribute or customize it further to suit their needs.

User Growth & Download Statistics

Add-on Design Developer Tools

By:

Daily users:

Rating:

Version:

2.1.1resigned1 Last updated: 2024-04-25

Version code:

5727427

Creation date:

2016-12-21

Risk:

Permissions:

activeTab
<all_urls>

Size:

23.39KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-17

Compare stats and ranking:

Ranking

# 3,014 ▼ 4

Other rankings

#338 in Web Development ▼ 3#56 in tons keyword 37 #192 in menu keyword 36 ▼ 1#243 in gif keyword 25 ▼ 3

Other platforms

Dimensions (v3.0.1)

100,000 4.16

(462)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Felix Niklas

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/dimensions_extension/

User Reviews

Users praise Dimensions as a simple and useful tool for measuring elements on web pages, valuable especially for web designers requiring precise pixel measurements. It works well in some Firefox versions and has an attractive interface. However, multiple reviews report issues with hotkey functionality, inability to disable with Esc key, occasional complete loss of functionality in certain Firefox versions, and concerns over extensive permissions. Additionally, users wish there were an option to copy measurements directly from elements. Overall, the extension is appreciated but has key functional and privacy concerns.

Pros

Simple and useful for measuring elements on web pages.
Helpful for web design and getting exact pixel measurements.
Works well with certain Firefox versions (e.g., Firefox 80).
Attractive and good for front-end web development.

Cons

Hotkeys including default and configured ones do not work properly.
Turning off the extension with the Esc key does not function.
Extension becomes non-functional or inactive in some Firefox versions (e.g., Firefox 69).
Permission request to access data from all websites raises privacy concerns.
Lacks functionality to copy measurements directly after clicking elements.

Recent reviews

by Fi*****, 2025-03-10

Thank so much!

by Fi*****, 2024-07-03

View all user reviews ›

Is Dimensions Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Dimensions requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Dimensions is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension has similar fingerprint to known malware: eondmmmpfnofpakacdndcacpjnkliafi. Match ratio: 0.6666666666666666.
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******