Convert flif to dhr Online: flif2dhr
You can use Tom's Editor to easily convert images from
Free Lossless Image Format .FLIF to Double High-Resolution .DHR.
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.
Double High-Resolution is an image format with extension DHR.