I import a small gif image by Sprite Sheet, and the original gif file is 1.9 MB after minification and optimization by Imageoptim, but it will be 24.5 MB with Sprite sheet format, and it is really too big especially for mobile mode.
optimize the file that’s the result of hypes spritesheetfeature. this’ll save up about 80% i guess …
so you’ll end up with 4-5 mb.
to go further than this use a tool like https://ezgif.com before importing and change the colors, compression, framerate, cropping, dimensions and so on …
Thanks and I found there is another way to minify the sprite sheet after the gif file was imported, please check the screenshot, and the size will be set much smaller too: