Adding transparency to existing images using Gimp

To modify an existing image so it has transparency in Gimp, here’s a quick summary of steps from this section of the Gimp docs:

  • Open the image
  • Add an alpha layer: Layer > Add Transparency > Add Alpha Layer
  • Show the Channels dialog: Windows > Dockable Dialogs > Channels – you now see one of the original image and the Alpha layer
  • Select the original layer, then use the Eraser tool to erase the original background from the image (the part that you want to be transparent).

 

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