Ruler Grid

Name: Ruler Grid
Author: MDesign

Ultimate web design toolkit! Precision rulers, eyedropper, font scanner, and live page editing in one powerful tool. Measure distances, pick colors, and tweak any layout in real-time. Build pixel-perfect websites faster. Essential for dev and design.

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Features & Capabilities

Ruler Grid — All-in-One Toolkit for Designers & Frontend Developers

Ruler Grid is a powerful Firefox extension that helps you analyze and refine any website’s layout. Measure elements, inspect styles, pick colors, and experiment with designs — all directly in your browser.

Key Features:

• Rulers & Guides Measure distances and align elements with precision using horizontal and vertical guides.

• Eyedropper Tool Pick any color or gradient from the page and copy values in HEX, RGB, or HSL.

• Typography Inspector Identify fonts, sizes, weights, and line heights instantly.

• Live Page Editing Edit text, spacing, and layout directly on any website without opening DevTools.

• CSS & Style Inspector View computed styles, CSS properties, and Tailwind classes with one click.

• Responsive Grids Overlay layout grids to check columns, gutters, and alignment across screen sizes.

Why Ruler Grid? Fast, lightweight, and easy to use — Ruler Grid gives you the tools you need to analyze layouts and improve your workflow without leaving the page.

User Growth & Download Statistics

Add-on

By:

MDesign

Daily users:

13 2

Version:

1.3.0 Last updated: 2026-04-29

Version code:

6235780

Creation date:

2026-04-26

Risk:

Permissions:

Host permissions:

<all_urls>

Content scripts matches:

<all_urls>

Size:

4.79MB

Email:

de*****@gmail.com

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-04

Compare stats and ranking:

Ranking

# 28,208 ▲ 2,070

Other rankings

#18 in eyedropper keyword 48 #24 in grid keyword 26 ▲ 3#49 in rule keyword 10 ▲ 1

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:

MDesign

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/ruler-grid/

Email:

de*****@gmail.com

Is Ruler Grid 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.

Ruler Grid requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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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.

Ruler Grid is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

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