Convert djvu to pnm Online: djvu2pnm
You can use Tom's Editor to easily convert images from
DJVU .DJVU to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
DJVU is an image format with extension DJVU.
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.