Convert grf to png Online: grf2png

You can use Tom's Editor to easily convert images from
GRF, MAX, P41, PIX .GRF to Portable Network Graphics .PNG.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

GRF

GRF, MAX, P41, PIX is an image format with extension GRF.

PNG

Portable Network Graphics is an image format with extension PNG.