element. From there, you can either convert it to an artboard (Object > Artboards > Convert to Artboard) if you are using CS4+ or you can just leave the rectangle and exporting/Save for Web will see that as the artwork boundaries. Width and Height Enter 20 pixels for both, so 20 pixels are added to both Width and Height dimensions. Making sure you have your Photoshop file window open in the background and in view, drag and drop the PNG file onto the Photoshop document. However, you can only use it to resize an image's width. Launching the CI/CD and R Collectives and community editing features for python: Show numpy padded image by opencv, Pad image that is stored as how to add padding to an image in photoshop