[have_faith]

I’m making an assumption, but I would guess most of the images being shared are about a tenth of that.

[input_sh]

Images and videos, though to be fair, the limit for both is 15 MB.

And I think it's a safe assumption there's some ffmpeg / imagemagick running somewhere that reduces the size even further before serving it to others.

[donatzsky]

Each instance can set it's own size limits.