Convert ca3 to pnm Online: ca32pnm
You can use Tom's Editor to easily convert images from
CrackArt .CA3 to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
CrackArt is an image format with extension CA3.
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.