Convert pnm to gfb Online: pnm2gfb

You can use Tom's Editor to easily convert images from
Portable aNy Map .PNM to Atari GFB .GFB.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

PNM

PNM images are uncompressed 24 bit RGB images. Can cannot store Alpha channel. PNM images come in 2 types: binary and text. Especially popular on Linux.

GFB

Atari GFB is an image format with extension GFB.