How do you save a Gimp image maintaining its transparency?
Simple. Just save the file as PNG image. Just go to File >> Save As, and when you enter the file name to save as, just put “.png” at the end of the file name. A dialog box will pop up asking allowing you to set some PNG options — just click the “Save” button. If you want your image to be transparent, you may need to turn off the visibility of your Background layer, or any other layers that are non-transparent layers, before saving the image. You can do this by clicking on the eye icon next to the layer in the Layer dialog box.