Convert drg to pnm Online: drg2pnm
You can use Tom's Editor to easily convert images from
Atari DRG .DRG to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Atari DRG is an image format with extension DRG.
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.