Convert spot to pnm Online: spot2pnm
You can use Tom's Editor to easily convert images from
SPOT satellite images .SPOT to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
SPOT satellite images is an image format with extension SPOT.
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.