Breakpoint Tester

Breakpoint Tester

Easily switch between multiple breakpoints to test a sites responsiveness at various screen sizes.

What is Breakpoint Tester?
Breakpoint Tester is a Chrome extension that allows you to quickly and easily test the responsiveness of a website at various breakpoints. It comes with preset breakpoints or you can use your own. It is open source and welcomes contributions. Feedback is encouraged.
This extension was removed from Chrome Web Store on 2023-02-03
Users: 5,504+
Rating: 3.68 (22)
Version: 1.0.4 (Last updated: 2014-04-18)
Creation date: 2014-04-18
Risk impact: Low risk impact
Risk likelihood: High risk likelihood
Manifest version: 2
  • storage
  • contextMenus
  • system
  • system.cpu
  • system.memory
Size: 169.98K
URLs: Website
Stats date:

Other platforms

Not available on Firefox
Not available on Edge
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Breakpoint Tester is used to quickly and easily test the responsiveness of a website at various breakpoints. Breakpoint Tester ships with some sensible defaults to get you started off right but you're more than welcome to use your own custom breakpoints.

Breakpoint Tester uses the default media queries that ship with Bootstrap 3 as a baseline for it's breakpoint presets which are:

480px (Mobile) 768px (Tablet) 992px (Laptop) 1200px (Desktop)

Breakpoint Tester is open source and licensed under the MIT license. You are more than welcome to contribute to development, the project can be found on GitHub:

If you run into any issues or would like to request a new feature please do so either via the "Send Feedback" link in the Chrome Webstore or by opening a new GitHub issue. Feedback is both welcome and encouraged!

User reviews
This extension does NOTHING. No matter what I click, NOTHING happens.
by Sergio Vazquez II Sergio Vazquez II, 2021-07-08

Great extension for web devs
by 7b3n 7b3n, 2020-07-08

Does not take in account developer tools width :(
by Vlad Ovchinnikov Vlad Ovchinnikov, 2019-08-19
View all user reviews
Risk impact

Breakpoint Tester is relatively safe to use as it requires very minimum permissions.

Risk likelihood

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

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