The Cropping feature allows for boxes to be drawn by the user or for a specific size to be typed in. Cropping is instant

The crop to size option allows user to type in a specific size and and when a crop box is drawn it will scale all contents to the specified size. In this example, 3 inches by 3 inches is the specified size and no matter where the box is moved or how much of the image the box is sized to contained, it will always be scaled to 3 by 3.