# Element Size Ruler

> Measure element sizes and distances on webpages with ease.

Canonical page: [https://chrome-stats.com/d/element-size-ruler](https://chrome-stats.com/d/element-size-ruler)

## Overview

- **ID:** `element-size-ruler`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Guerra
- **Category:** other
- **Daily users:** 5
- **Version:** 1.0
- **Last updated:** 2024-07-30
- **First published:** 2024-07-29
- **Size:** 21 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/element-size-ruler/)

## Description

Element Size Ruler allows you to measure element sizes and distances on any webpage with a simple, user-friendly ruler. Activate the extension with a toolbar button and start measuring by clicking and dragging on the page. The ruler updates in real-time to show width, height, and coordinates.

Features:
Measure element sizes in pixels
Real-time updates of width, height, and coordinates
Toggle activation with a toolbar button
Supports mouse and touch input

## Rankings

- #45,652 — Overall
- #48 — size
- #53 — element
- #136 — rule

## Permissions and access

### Permissions

- `activeTab`

## Safety

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

### Analysis details

- This extension has low user count. Unpopular extensions may not be stable or safe.

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

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