Convert ximg to pnm Online: ximg2pnm

You can use Tom's Editor to easily convert images from
Extended GEM Bit Image .XIMG to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

XIMG

Extended GEM Bit Image is an image format with extension XIMG.

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.