Convert rm3 to pnm Online: rm32pnm

You can use Tom's Editor to easily convert images from
Rambrandt .RM3 to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

RM3

Rambrandt is an image format with extension RM3.

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.