Convert dd to pnm Online: dd2pnm

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

Go to Tom's Editor

DD

Doodle is an image format with extension DD.

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.