Convert jxr to pnm Online: jxr2pnm

You can use Tom's Editor to easily convert images from
JPEG extended range .JXR to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

JXR

JPEG extended range is an image format with extension JXR.

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.