Test mobile responsive web pages for free.

A mobile friendly website tester

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Unfortunately - doesn't work particularly well on mobile.

One of the main requirements for displaying a mobile phone is a screen size that is larger than said mobile phone.

Feel free to check out all of our articles however

3:30 PM
iPhone 6/7/8 : 375 x 667

Most popular phones:

Top phone models of 2020:

The most common phone sizes in the US [2020 Update]

Device Web resolution Native Scale
iPhone X 375 x 812 3.0
iPhone 6/7/8 375 x 667 3.0
iPhone 6/7/8 Plus 414 x 736 3.0
iPhone SE 320 x 568 3.0
Galaxy S5 360 x 640 3.0
Pixel 2 411 x 731 3.0
Pixel 2 XL 411 x 823 3.0
iPad Pro 9.7-inch 769 x 1024 2.0
iPad Pro 10.5-inch 1112 x 834 2.0
iPad Pro 12.9-inch 1024 x 1366 2.0
iPad Mini / Air 768 x 1024 2.0
[1] - Native Scale refers to the mapping of web pixels to native pixels. Ex: iPhone X has a native resolution of 1125 x 2436 but 375 x 812 addressable pixels.
A major component of responsive design is creating the right experience for the right device. The above list of devices is a good reflection of the US smartphone market.
iOS Device Compatibility Reference

Resources: is a free resource to testing mobile responsive web pages.

About the site: is a free resource to testing mobile responsive web pages.

The goal of is to provide a simple and intuitive framework for testing site performane on a variety of mobile devices.

In additional to the phone emulator - I work to provide current data on the most common device resolutions and modern best practices for responsive development.

If you enjoy using this free tool - feel free to check out the GitHub, or some other projectes at

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