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by vibrunazo 5214 days ago
That's an interestingly huge sprite sheet indeed.

https://developers.google.com/apps/images/io/particle_hover-...

I would guess it's because of the color palette maybe? GIF was only 256 colors last I used it (over a decade ago). SO maybe they tried a gif animation, noticed some weird looking graphical artifacts because of the color difference from background to foreground. Then decided use a JPG sprite sheet instead for more colors?