Convert cis to flif Online: cis2flif

You can use Tom's Editor to easily convert images from
Compuserve RLE image .CIS to Free Lossless Image Format .FLIF.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

CIS

Compuserve RLE image is an image format with extension CIS.

FLIF

Free Lossless Image Format is an image format with extension FLIF.