GIMP FAQ What is GIMP and how do I get a copy? More about GIMP that is not covered in the link above. How do I use GIMP to stretch width while keeping height the same. (I use this for my Facebook page cover.) How do I crop a circle out of a layer? I just downloaded a free copy of GIMP. Now I have some very annoying new popup advertising on my Mac. How do I get rid of it?