Convert acbm to pnm Online: acbm2pnm

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

Go to Tom's Editor

ACBM

Amiga Continuous Bitmap is an image format with extension ACBM.

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.