Convert pdf to fs Online: pdf2fs

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

Go to Tom's Editor

PDF

Adobe PDF format is the most popular document format. Overcomplicated. Offers compression.

FS

Usenix FaceSaver file is an image format with extension FS.