Convert dgp to pnm Online: dgp2pnm

You can use Tom's Editor to easily convert images from
Atari AP3 .DGP to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

DGP

Atari AP3 is an image format with extension DGP.

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.