CmdID / Commands
Convert a JPEG/JFIF file to the PPM or PGM format. tldr-pages
On several platforms
Opens CmdID with your command. It is read in your browser and sent nowhere.
Convert JPEG/JFIF image to a PPM or PGM image
jpegtopnm path/to/file.jpg >path/to/file.pnm
Display version
jpegtopnm -version