Convert hrz to pnm Online: hrz2pnm

You can use Tom's Editor to easily convert images from
Slow Scan Television .HRZ to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

HRZ

Slow Scan television is an image transmission method sed mainly by amateur radio operators.

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.