Convert cel to flif Online: cel2flif

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

Go to Tom's Editor

CEL

Autodesk Animator is an image format with extension CEL.

FLIF

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