Convert mono to pnm Online: mono2pnm

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

Go to Tom's Editor

MONO

Mono Dump is an image format with extension MONO.

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.