Convert sun to flif Online: sun2flif
You can use Tom's Editor to easily convert images from
SUN Rasterfile .SUN to Free Lossless Image Format .FLIF.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
SUN Rasterfile is an image format with extension SUN.
Free Lossless Image Format is an image format with extension FLIF.