Convert flif to sps Online: flif2sps
You can use Tom's Editor to easily convert images from
Free Lossless Image Format .FLIF to Spectrum 512 (smooshed) .SPS.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Free Lossless Image Format is an image format with extension FLIF.
Spectrum 512 (smooshed) is an image format with extension SPS.