VoidWorldGen
A simple Minecraft plugin to generate a void world.

Compatible with Paper, Purpur, Pufferfish etc from 1.19 to 1.21.3

It can be used to prevent world generation outside of the world border.
To prevent that fully generate your world with a plugin as Chunky then add this plugin & configure your bukkit.yml.

Instalation
Place the .jar in plugins/ , and then reload the server

Usage
bukkit.yml

If your world is not called world, replace with your world name. You can set VoidWorldGen as generator for the other worlds.