There are two ways to crop, quick cropping and cropping with a visual cropping tool.
#1: Quick Cropping
Use or to select an area, then double-click, or press Enter, or click
#2: Visual Cropping Tool - when there is no area selected, click this to show the visual cropping tool to fine-tune an area to crop.
Crop to Shape dialog - You can crop to a shape of your choice including corner radius and background color.
Next: Resizing Tools >