Player head emojis in chat, using the object text components added in Minecraft 1.21.9.
Type :smile: in chat and it renders as a player head. /emoji lists all available emojis.
Requires Paper 1.21.9 or newer. No dependencies.
By default everyone can use emojis.
Drop the jar into your plugins folder and restart the server.
Clone the repository, cd into it, then ./gradlew build.
The output file will be located in ./build/libs/ChatEmoji-VERSION.jar.