Mobile simulator - responsive testing tool

Name: Mobile simulator - responsive testing tool
Rating: 3.7581 (62 reviews)
Author: François

By: François Add-on

Smartphone and tablet simulator on computer with several models to test mobile responsive websites.

Overview

Firefox Add-ons Store

Daily users

10,455 ▲ 31

Data as of 2026-07-25

Rating:

3.76

(62)

Version:

2.1.11

Last updated: 2021-02-15

Features & Capabilities

Mobile Emulator Chrome Extension

The Mobile Emulator extension allows developers and designers to test their mobile websites on realistic smartphone and tablet models directly from their computer. With support for 8 popular device models including iPhone 5, iPhone 11, Samsung Galaxy S10, Xiaomi Redmi Note 6 PRO, iPhone 12, Samsung Galaxy Tab S7, iPad Air, and Macbook Air, it covers a broad spectrum of screen resolutions and orientations.

Designed to promote a mobile-first mindset, this tool provides accurate simulations to ensure your site looks and works great on multiple devices. Additionally, it features a screenshot capability, enabling users to capture transparent PNG images of devices for use in emails, presentations, or other media.

User Growth & Download Statistics

Add-on Developer Tools Design

By:

Daily users:

Rating:

Version:

2.1.11 Last updated: 2021-02-15

Version code:

5182428

Creation date:

2020-11-12

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

1.03MB

Email:

su*****@webmobilefirst.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-25

Compare stats and ranking:

Ranking

# 741 ▼ 5

Other rankings

#67 in Web Development

#1 in response keyword 10

#1 in testing keyword 35

#2 in smartphone keyword 2

#5 in mobile keyword 49

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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:

François

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/simulateur-mobile/

Email:

su*****@webmobilefirst.com

Website:

https://www.webmobilefirst.com/en/

User Reviews

User reviews praise the add-on for reliability, speed, and the added capability of emulating phone HTTP requests for backend work, making it useful for testing before buying a device. However, multiple users report stability issues and incomplete functionality, especially around orientation (no landscape/rotation, no scrolling). There are also concerns about the premium features not working on Firefox and poor developer support. A few comparisons to Chrome and concerns about pricing have been noted, but core positives center on usable performance and extended emulation features.

Pros

Works reliably and quickly.
Emulates device HTTP requests for backend processing beyond simple viewport resizing.
Useful for testing devices before purchasing.

Cons

Reported unstable functionality and bugs, with some reviews noting it doesn’t work as expected.
Cannot rotate or view in landscape orientation and cannot scroll, limiting device emulation features.
Premium/Pro features don’t work on Firefox and there is little or no developer support.

Recent reviews

J'ai une page blanche sur l'ensemble des rendus mobile. Ça ne semble donc pas fonctionner ...

by Fi*****, 2026-07-16

by Ja*****, 2026-07-13

View all user reviews ›

Is Mobile simulator - responsive testing tool 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.

Mobile simulator - responsive testing tool requires a lot of sensitive permissions. 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.

Mobile simulator - responsive testing tool has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

Medium This extension has medium user count. Unpopular extensions may not be stable or safe.
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