A Mac Application for aiding the development and testing of responsive sites. Responsive Resize lets you test your site with the viewport of any device
You can add as many devices as you wish to the device bar. If the particular device or viewport you require is not already in the app you can simply add it yourself. You can also re-order by drag-and-drop.
There are a variety of different controls for testing. You can adjust the width & height quickly by typing a new value, you can rotate the viewport & you can increase or decrease the width by a given amount.
You can change the User Agent to match any string you wish — simply select a User Agent from the menu. If the string you need to use is not there, you can enter a custom user agent to mimic any device.
Is there a Mobile Device or User Agent String that you would like to be pre-installed in Responsive Resize?
If so you can request it here…