A gfb file extension is related to GIFBlast and used for its compressed GIF image files.
There is one other file type using
the GFB file extension!
.gfb - DeskPic for Atari ST picture image
GFB file extension - GIFBlast compressed GIF image
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.
This gfb file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.