Responsive Tester

by Cool and Fun Software · test-responsive.freefinancetools.net · Workflow & Planning

FeaturedEstablished publisherManifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

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

Users

40K

0 in 30 days

Rating

3.0 / 5

−0.07 in 30 days

Ratings

0 in 30 days

Store rank

#4,015

#3,485 among extensions

Version

3.0.0

updated 15 Nov 2023

Users

monthly, 3 years

Latest, 15 Oct 2026: 40,000 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 years

Latest, 15 Oct 2026: 95 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Responsive Tester

Test responsive web designs or mobile pages that detect specific user agents. Test multiple devices at the same time! The Mobile/Responsive Tester extension allows Developers to test their web pages against common mobile, phablet and tablet devices by emulating the user agent and screen resolution. Excellent for testing responsive web designs. Easily switch between portrait and landscape mode and test multiple mobile device's at the same time! To begin using the software, install our extension. Navigate to the webpage you wish to test for different resolution sizes. Click on our software extension icon, and then choose the resolution size.