# Dimensions

> A tool for designers to measure screen dimensions

Canonical page: [https://chrome-stats.com/d/dimensions\_extension](https://chrome-stats.com/d/dimensions_extension)

## Overview

- **ID:** `dimensions_extension`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Felix Niklas
- **Category:** web-development,appearance,other
- **Daily users:** 1,094
- **Weekly downloads:** 14
- **Rating:** 4.53 / 5 (17 ratings)
- **Version:** 2.1.1resigned1
- **Last updated:** 2024-04-25
- **First published:** 2016-12-21
- **Size:** 23 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/dimensions_extension/)

## Description

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.

## Rankings

- #3,132 — Overall
- #342 — Web Development
- #62 — tons
- #203 — menu

## Permissions and access

### Permissions

- `activeTab`
- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has similar fingerprint to known malware: eondmmmpfnofpakacdndcacpjnkliafi. Match ratio: 0.6666666666666666.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

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.

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- [Edit Resize Dimensions](https://chrome-stats.com/d/edit-resize-dimensions)

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Source: [Chrome-Stats](https://chrome-stats.com/d/dimensions_extension)