If I change my png sequence to texture atlas will I reduce file size?

I have a game with multiple sprites. ~10 sprites, ~6 animations per sprite, ~avg 6-18 frames per animation. Right now the output of this in webplayer is very large (>70mb) even with the most efficient acceptable import settings.

If I change all these sprites from being done by loading png sequences to sprite sheets/texture atlases, will I save file size in the final webplayer and if so how much could I expect? Not too worried about memory usage, this is all about file size to make the web player download better

It won’t make any difference. For example, if you have four separate 64x64 images, that’s exactly the same as one 128x128 image. The amount of image data does not change.