FASTER
No rendering required, all the frames of an animation are saved the moment the user hits "Publish" and the animation is ready to be moderated.
MORE RELIABLE
No need for servers-side rendering or cronjobs.
SMALLER FILE SIZES
Individual frames are compressed more efficiently using PNG compression.
STREAMING
This format can stream, no need for the whole animation to load before it starts
MORE COLOURS
PNG format allows for a much wider colour palette. This avoids annoying pixelation and dithering effects.