Convert plm to pnm Online: plm2pnm

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

Go to Tom's Editor

PLM

Atari APC is an image format with extension PLM.

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.