Convert png to gg Online: png2gg
You can use Tom's Editor to easily convert images from
Portable Network Graphics .PNG to Koala Painter 2, packed
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Portable Network Graphics is an image format with extension PNG.
Koala Painter is a Commodore 64 program do edit images. GG images are packed using RLE compression.