Hou kan je een achtergrond transparant maken met Paint.NET?

Go to File-->Open :FileOpen: and open the image in which you want to make the background transparent.

Select the Magic Wand tool :MagicWandTool: and set the Tolerance level to 25% (or anything depending on your image. I would recommend 25% for sprites/pixel images.). Click somewhere on the background.

Go to Edit-->Cut. :EditCut: You should see a "checkerboard" pattern where the image is now transparent.