Convert ngf to flif Online: ngf2flif

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

Go to Tom's Editor

NGF

Ninell Graphic Format is an image format with extension NGF.

FLIF

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