This program can convert, compress, and decompress up to 4-bit grayscale images for displaying on the PalmPilot. It can take any pbm, pnm, pgm file generated by the netpbm package and convert it into a suitable image for the Pilot.

Together with netpbm many image formats, including JPEG, PNG, GIF, TIFF and BMP, could be converted into PDB format. This can be displayed on PalmPilot/III by viewers like "ImageViewer", "TinyViewer" or "Spec".