GFB file extension - GIFBlast compressed GIF image file
What is gfb file? How to open gfb files?
File type specification:
The gfb file extension is used for a special uncompressed lossless version of GIF format used by GIFBlast utility. the *.gfb file stores compressed GIF image.
The GIFBlast seems to be obsolete product without support from developer or producer.