Convert pdf to cis Online: pdf2cis

You can use Tom's Editor to easily convert images from
Portable Document Format .PDF to Compuserve RLE image .CIS.
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.

CIS

Compuserve RLE image is an image format with extension CIS.