Convert ngf to pnm Online: ngf2pnm

You can use Tom's Editor to easily convert images from
Ninell Graphic Format .NGF to Portable aNy Map .PNM.
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.

PNM

PNM images are uncompressed 24 bit RGB images. Can cannot store Alpha channel. PNM images come in 2 types: binary and text. Especially popular on Linux.