Responsive Tester

Test responsive web designs or mobile pages and see if it is mobile friendly

Responsive Tester is a powerful Chrome extension designed for developers and designers to easily test responsive web designs and mobile pages. It emulates various user agents and screen resolutions for common mobile, phablet, and tablet devices, allowing you to ensure your websites are optimized for different devices. The extension supports testing multiple devices at once and offers simple toggling between portrait and landscape modes, making it an excellent tool for verifying mobile friendliness.

To use Responsive Tester, simply install the extension, navigate to the desired webpage, and select the device resolution you want to test from the extension icon. This streamlined process helps developers quickly identify and fix design issues, improving user experience across all device types.

User reviews

Users find Responsive Tester easy to use with a clean interface and useful for testing website responsiveness across multiple mobile devices. However, many users report functionality issues such as the extension not working properly or at all, limitations to smartphones and tablets without desktop options, inability to work in incognito mode, and requiring manual enabling of the extension icon. Suggestions include adding desktop screen support and improving user experience by refreshing the screen automatically when changing devices.
Pros
  • Easy to use and clean interface.
  • Allows displaying multiple device screens for responsive testing.
  • Provides a list of phones and tablets for testing device responsiveness.
  • Works with all sites except localhost.
  • Helpful for checking website responsiveness on various devices.
Cons
  • Does not work properly or at all for many users.
  • Does not work in incognito mode.
  • Lacks desktop screen options; only smartphones and tablets are available.
  • Requires manual enabling of the extension icon in the Chrome toolbar.
  • Needs screen refresh when switching between devices for accurate simulation.
Recent reviews
اكثر من جيد
by Za*****, 2025-04-29

waste of time not working
by DU*****, 2025-04-05

Does not work at all.
by al*****, 2025-03-11
View all user reviews ›

Extension safety

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 Tester does not require any sensitive permissions.

Risk impact analysis details
    Risk likelihood
    Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. 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 Chrome extension.

    Responsive Tester has earned a good reputation and can be trusted.

    Risk likelihood analysis details
    • High This extension has low user count. Unpopular extensions may not be stable or safe.
    • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
    • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
    • Good **** ********* ** ****** ** ********
    • Good **** ********* *** **** **** *******
    Upgrade to see full risk analysis details

    Promo images

    Responsive Tester marquee promo image
    Marquee promo image
    Small promo image

    Compare extensions

    Similar extensions

    Here are some Chrome extensions that are similar to Responsive Tester:

    Popular extensions / apps

    Here are some popular extensions / apps that you might be interested in: