# Responsive Grid

> This persona gives you a set of grid lines indicating approximate browser viewport widths which can be very useful when designing responsive websites. Works especially well in combination with the Web Developer toolbar for CSS, so you can quickly drag the sidebar break to whatever width you want to work in: longer explanation of how I use it here: http://www.jamessmith.co.uk/articles/responsive-firefox-persona

Canonical page: [https://chrome-stats.com/d/responsive-grid](https://chrome-stats.com/d/responsive-grid)

## Overview

- **ID:** `responsive-grid`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** thisisjamessmith
- **Category:** websites
- **Daily users:** 1
- **Version:** 2.0
- **Last updated:** 2019-05-13
- **First published:** 2012-05-15
- **Size:** 11 KB
- **Data as of:** 2026-09-11
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/responsive-grid/)

## Description

Responsive Grid is a Firefox add-on that provides grid lines indicating approximate browser viewport widths. It is useful for designing responsive websites and works well with the Web Developer toolbar.

## Rankings

- #110,404 — Overall
- #52 — response
- #97 — grid

## Safety

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

### Analysis details

- This permission has no access or impact on the user's system or data, thus carrying no risk.
- 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/responsive-grid)