Viewport Resizer – Responsive Testing Tool

Viewport Resizer – Responsive Testing Tool is a Chrome extension developed by Malte Wassermann. According to the data from Chrome web store, current version of Viewport Resizer – Responsive Testing Tool is 1.1.9, updated on 2019-12-28.
80,000+ users have installed this extension. 259 users have rated this extension with an average rating of .

Responsive design testing tool to test any website’s responsiveness – it only takes 2 seconds! Emulate various screen resolutions.

Viewport Resizer is a tool to test any website’s responsiveness. Just install the extension, go to the page you want to test and check all kinds of screen resolutions of the page.

The smartest way to share your defined environment of devices and breakpoints directly with your team and client.

This tool should not replace a real device simulation. It rather helps you, your team and client testing statuses, transitions, text length etc. throughout different device types.