Hi. I have many sprites for animation in UI. In assets sprites is about 10 kB, but after build it is about 700 kB. Therefore my asset is 100 MB, but after build aplication is 350 MB. Why? Sprites are 98 % from it.
u building for android or apple?
You probably imported your sprites in Unity as PNGs, or some other format which is compressed. These files don’t end-up in your actual build, though. Whatever compressed file format you use to store sprites, Unity has to re-code the images to special formats that are compatible with render hardware. The compression used for these formats is often a larger file size than is possible with PNG or JPG.
I build to android. Yes. That will be it. (Unity has to re-code the images to special formats that are compatible with render hardware. The compression used for these formats is often a larger file size than is possible with PNG or JPG.). I make game with MP4 videos. But after it, I found that they work badly after build. So I change MP4 to sprites animation. With PNG (about 100 kB and after to JPEG about 10 kB). But what was my surprise that it didn’t help anyway. I must reduce the number videos.
I did not realize that.