Convert hrs to pnm Online: hrs2pnm
You can use Tom's Editor to easily convert images from
HIR, HRS .HRS to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
HIR, HRS is an image format with extension HRS.
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.