# Viewport Master - Responsive

> Simulates various screen sizes and devices for responsive design testing

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

## Overview

- **ID:** `viewport-master-responsive`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Removed
- **Publisher:** NOHU90
- **Version:** 1.0
- **Last updated:** 2024-09-13
- **First published:** 2024-09-12
- **Size:** 18 KB
- **Data as of:** 2024-09-13
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/viewport-master-responsive/)

## Description

Simulates various screen sizes and devices for responsive design testing
Allows users to create custom viewport sizes
Supports adding and saving custom devices
Provides a resizable and draggable viewport overlay on the current page
Displays the current viewport size in real-time
Persists custom devices using browser storage

## Permissions and access

### Permissions

- `activeTab`
- `storage`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** High risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension is not longer available in the store

> 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/viewport-master-responsive)