Thread:Sannse/@comment-33378348-20180506143711/@comment-2060498-20180508165014

Whenever you make a new canvas, go to "Advanced options", then under the "Fill with" option, select "transparency", then hit okay.

Alternatively, without needing to go into the Advanced Options section, just make a new canvas, and on that new image, make a new layer, and then delete the layer named "Background". You should now have a transparent canvas.