Convert fgs to pnm Online: fgs2pnm

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

Go to Tom's Editor

FGS

Fun Graphics Machine is an image format with extension FGS.

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.