As a gif, which gives the saber its shape, it loses its glow. Before it was a gif, I had the saber as a jpg, where it had a white background, but still the lightsaber glow was present.
Losing the white background also meant losing the glow. I'm not working on that issue now, because I worked on the sabers until I hate them. I may try to fix the issue one day, but that day isnt in the near future.