by Julieanne Kost
To use the Crop tool to add canvas to your image, drag out a crop and release the mouse. Then, drag the crop handles outside of the image area and apply the crop. The area outside of the image will be added to the canvas. Note: to add transparency around the image (instead of filling the added space with the background color) convert the Background into a layer by selecting Layer > New > Layer From Background (or by clicking on the lock icon to the right of the word Background in the Layers panel).