Convert ap3 to pnm Online: ap32pnm
You can use Tom's Editor to easily convert images from
Atari AP3 .AP3 to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Atari AP3 is an image format with extension AP3.
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.