By stripping metadata from the images and compressing them by running `optipng -o7 -strip all <emoji.png>` the file sizes went from 15kb or 1.1kb to around 0.2-0.5kb.
By stripping metadata from the images and compressing them by running `optipng -o7 -strip all <emoji.png>` the file sizes went from 15kb or 1.1kb to around 0.2-0.5kb.