Convert xwd to flif Online: xwd2flif

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

Go to Tom's Editor

XWD

X Window Dump is an image format with extension XWD.

FLIF

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