Responsive Design Tester

Name: Responsive Design Tester
Rating: 2.5 (2 reviews)
Author: I9bet

By: I9bet

Helps users test website responsiveness across various devices and screen sizes to ensure optimal user experience.

This add-on was removed from Firefox Add-ons Store on 2026-05-13

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Features & Capabilities

Responsive Design Tester is an essential Chrome extension tailored for web designers and developers. It allows you to easily simulate how your website appears on various devices such as mobiles, tablets, and desktops, ensuring a fluid and seamless user experience across all screen sizes. With this tool, you can confidently verify that your website maintains optimal responsiveness and design consistency, enhancing usability and engagement.

By integrating this extension into your development workflow, you optimize your site's adaptability to diverse device dimensions, helping you deliver professionally responsive websites every time.

User Growth & Download Statistics

Add-on Developer Tools Design

By:

I9bet

Daily users:

309

Rating:

2.50

(2)

Version:

1.0 Last updated: 2024-03-31

Version code:

5713298

Creation date:

2024-03-30

Risk:

Size:

13.03KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-05-13

Compare stats and ranking:

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:

I9bet

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/responsive-design-tester/

User Reviews

No hace nada que no haga ya el propio navegador. Solo cambia la interfaz gráfica.

by Fi*****, 2026-02-23

Can Be Improved. Pretty Limited Atm. It Needs The Option To Add Custom Resolutions And Change To Landscape Mode.

by Se*****, 2025-11-20

View all user reviews ›

Is Responsive Design Tester 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.

Responsive Design Tester does not require any sensitive permissions.

Risk impact analysis details

Low This permission has no access or impact on the user's system or data, thus carrying no risk.

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.

Responsive Design Tester may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.