Convert acs to flif Online: acs2flif

You can use Tom's Editor to easily convert images from
AtariTools-800 font .ACS to Free Lossless Image Format .FLIF.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

ACS

AtariTools-800 font is an image format with extension ACS.

FLIF

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