Convert mbg to pnm Online: mbg2pnm

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

Go to Tom's Editor

MBG

Mad Designer is an image format with extension MBG.

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.