Convert ldm to pnm Online: ldm2pnm

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

Go to Tom's Editor

LDM

Ludek Maker is an image format with extension LDM.

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.