Convert thinkjet to pnm Online: thinkjet2pnm

You can use Tom's Editor to easily convert images from
HP ThinkJet printer commands .THINKJET to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

THINKJET

HP ThinkJet printer commands is an image format with extension THINKJET.

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.