Edges can be rounded in Photoshop by using the Round command. This command creates a circular shape around the edge of the image. The Round command is located in the Tools palette, and it is used to round off an edge of an image. To use the Round command, you first need to select the image you want to round off. Then, use the mouse to drag the mouse over the edge of the image and then release the mouse button. TheRound command will automatically create a circular shape around the edge of your selection.