This extension is perfect for web designers and developers. It is particularly useful for them by helping them test their layouts on different browser resolutions.

There is a list of possible resolutions that you can add to the list. You can resize the window to a predefined value, or to the actual one of the device.

You can add a setting to set the position of the window so that it will not cover the entire screen.

You can add settings to apply the new dimensions to the entire window or to the viewport only.

You can add global key shortcuts to the browser window, to make the extension easier to use.

You can export your settings so that they will be available on a different computer.