Download Paper 1.21.4 Server
The Paper server JAR for Minecraft 1.21.4, direct from the official source. Build details, release date and Java requirements below.
Java required
Java 21
Released
Jun 9, 2025
Build
232
File size
49 MB
Channel
Stable
SHA-1 checksum
5ee4f542f628a14c644410b08c94ea42e772ef4d29fe92973636b6813d4eaffc
Setup
Start script (Linux/macOS)
java -Xms4G -Xmx4G --add-modules=jdk.incubator.vector -XX:+UseG1GC -jar paper.jar noguiStart script (Windows)
java -Xms4G -Xmx4G --add-modules=jdk.incubator.vector -XX:+UseG1GC -jar paper.jar --nogui
pauseOther Minecraft 1.21 builds of Paper
Other builds in the 1.21.x line. The newest stable is selected by default above.