Same emoji, but compressed. It helps to serve emoji via your server.
Origin Story: WordPress emoji comes from s.w.org
and they were not optimized well, Compressed Emoji was fixing that problem (detail info).
Pull requests are welcome on Github
If you like Compressed Emoji, then consider checking out my other projects:
Extract the zip file and just drop the contents in the wp-content/plugins/
directory of your WordPress installation and then activate the Plugin from admin’s Plugins page.
You can use compressed_emoji_url
and compressed_emoji_svg_url
filters for CDN replacement