# Responsive Design Checker

> Perfect your website's responsiveness with this versatile extension. Test it on various mobile devices for an impeccable user interface.

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

## Overview

- **ID:** `responsive-design-checker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Vin777
- **Category:** appearance,alerts-updates
- **Daily users:** 26
- **Version:** 1.0
- **Last updated:** 2023-10-13
- **First published:** 2023-10-13
- **Size:** 13 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/responsive-design-checker/)

## Description

A powerful tool for developers, this extension lets you explore how your website looks on an array of mobile phones, including iPhone X and Galaxy S10.

## Rankings

- #21,791 — Overall
- #18 — response
- #32 — design
- #145 — checker

## 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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- [MobileInspector Pro](https://chrome-stats.com/d/mobileinspector-pro)
- [ResponsiveViewer Plus](https://chrome-stats.com/d/responsiveviewer-plus) — 1 users
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Source: [Chrome-Stats](https://chrome-stats.com/d/responsive-design-checker)