Convert fs to pnm Online: fs2pnm

You can use Tom's Editor to easily convert images from
Usenix FaceSaver file .FS to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

FS

Usenix FaceSaver file is an image format with extension FS.

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.