# Responsive Design Tester Pro

> Preview web pages across multiple device resolutions.

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

## Overview

- **ID:** `responsive-design-tester-pro`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Burch
- **Category:** web-development
- **Daily users:** 13
- **Weekly downloads:** 1
- **Rating:** 1.00 / 5 (1 ratings)
- **Version:** 1.0
- **Last updated:** 2024-07-23
- **First published:** 2024-07-22
- **Size:** 12 KB
- **Data as of:** 2026-09-09
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/responsive-design-tester-pro/)

## Description

Providing a tool for testing web pages across different screen sizes and resolutions. Users can simulate various devices including smartphones, tablets, and desktops, and preview how their designs adapt to different viewports. This extension facilitates responsive web design testing and ensures optimal user experience across devices.

Features:

Device Simulation:
Simulate device resolutions and orientations to preview web pages in different contexts.
Viewport Customization:
Customize viewport dimensions and test specific breakpoints for responsiveness.
Device Library:
Access a library of predefined device presets for quick testing.
Screenshot Capture:
Capture screenshots of web pages at different resolutions for documentation or sharing.
Debugging Tools:
Use developer tools to inspect and debug layout issues on specific devices.

## Rankings

- #29,626 — Overall
- #25 — response
- #47 — design
- #81 — resolution
- #165 — device
- #230 — smartphone

## Permissions and access

### Permissions

- `activeTab`

## Safety

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

### Analysis details

- 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-design-tester-pro)