Convert ngg to flif Online: ngg2flif
You can use Tom's Editor to easily convert images from
Nokia Group Graphics
.NGG to Free Lossless Image Format .FLIF.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
NGG
Nokia Group Graphics
is an image format with extension NGG.
FLIF
Free Lossless Image Format is an image format with extension FLIF.