Convert flif to x3f Online: flif2x3f
You can use Tom's Editor to easily convert images from
Free Lossless Image Format .FLIF to Sigma Camera RAW Picture File .X3F.
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.
Sigma Camera RAW Picture File is an image format with extension X3F.