Convert yjk to pnm Online: yjk2pnm
You can use Tom's Editor to easily convert images from
Screen 12 .YJK to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Screen 12 is an image format with extension YJK.
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.