Board Thread:Support Requests - Getting Technical/@comment-24527343-20161025005904/@comment-25295528-20161114191536

When creating a new document in Photoshop, you can select a background content, as one of the four options, Transparent. Background Color, White and Other are the other 3 options.

If the image you have already has a square-fit white/colored background, you can use the magic wand tool (4th tool down on the left menu) and select the white/background color areas you want to delete - it should be able to distinguish between the image and the background this way.