# Specto Ruler

> Your digital precision instrument for web design perfection. Measure pixels, align elements, and inspect layouts with crosshair accuracy. Perfect for designers and developers who demand pixel-perfect results.

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

## Overview

- **ID:** `specto-ruler`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** dsincl12
- **Category:** web-development
- **Daily users:** 5
- **Version:** 2.1.1
- **Last updated:** 2026-07-07
- **First published:** 2024-12-01
- **Size:** 47 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/specto-ruler/)
- **Website:** [https://spectoindustries.com/specto-ruler](https://spectoindustries.com/specto-ruler)

## Description

This extension creates a measurement overlay activated by clicking the browser extension icon or by using the shortcut keys Alt+Shift+M (Option+Shift+M on macOS). 

Use arrow keys for 1px movement, Shift+arrows for 10px jumps, Ctrl+Shift+arrows to reposition the info panel and press D to reset border color. Press Escape to exit.

## Rankings

- #44,804 — Overall
- #96 — rule

## Permissions and access

### Permissions

- `activeTab`
- `scripting`
- `storage`

## Safety

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

### Analysis details

- This extension support email may not be valid

> 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/specto-ruler)