Leaf 221203 Server Jar Download

Official source

Leaf 221203 is the latest Leaf build for Minecraft 221203, published on 3 Dec 2022. The file is 63.6 MB.

Download

Downloads from github.com — Official — GitHub releases (Winds-Studio/Leaf).

The upstream does not publish a checksum for this file. MCJarHub computes a SHA-256 for such files on a schedule and shows it here once available — see how we source & verify.

Source: Official — GitHub releases (Winds-Studio/Leaf) No checksum published yet Last checked: 28 Oct 2026, 12:46 UTC Report a problem

Version facts

This build's date	3 Dec 2022
Channel	Release
File size	63.6 MB
Licence / terms	see upstream
Upstream project	github.com

What changed

Release notes on GitHub

Compatibility

Runs Bukkit, Spigot and Paper plugins built for Minecraft 221203.

Players need a Minecraft: Java Edition 221203 client. Other client versions can join only through a protocol plugin such as ViaVersion/ViaBackwards.

Known issues & safety notes

Back up your world before changing versions: worlds upgrade automatically on start and cannot be downgraded.
Known issues: search Leaf's issue tracker for 221203

How to set up Leaf 221203

Download the Leaf jar into an empty folder.
Start it once with the script below; it creates eula.txt and stops.
Set eula=true in eula.txt to accept the Minecraft EULA, then start again. Players join on port 25565.
Put plugins (.jar) into plugins/ and restart.

Linux / macOS — `start.sh`

#!/bin/sh
# start.sh — Leaf 221203
cd "$(dirname "$0")"
java -Xms4G -Xmx4G -XX:+AlwaysPreTouch -XX:+DisableExplicitGC -XX:+ParallelRefProcEnabled -XX:+PerfDisableSharedMem -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1HeapRegionSize=8M -XX:G1HeapWastePercent=5 -XX:G1MaxNewSizePercent=40 -XX:G1MixedGCCountTarget=4 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1NewSizePercent=30 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:G1ReservePercent=20 -XX:InitiatingHeapOccupancyPercent=15 -XX:MaxGCPauseMillis=200 -XX:MaxTenuringThreshold=1 -XX:SurvivorRatio=32 -jar leafkeyi-1.19.2.jar nogui

Windows — `start.bat`

@echo off
REM start.bat — Leaf 221203
java -Xms4G -Xmx4G -XX:+AlwaysPreTouch -XX:+DisableExplicitGC -XX:+ParallelRefProcEnabled -XX:+PerfDisableSharedMem -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1HeapRegionSize=8M -XX:G1HeapWastePercent=5 -XX:G1MaxNewSizePercent=40 -XX:G1MixedGCCountTarget=4 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1NewSizePercent=30 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:G1ReservePercent=20 -XX:InitiatingHeapOccupancyPercent=15 -XX:MaxGCPauseMillis=200 -XX:MaxTenuringThreshold=1 -XX:SurvivorRatio=32 -jar leafkeyi-1.19.2.jar nogui
pause

The JVM flags are Aikar's G1 flags as recommended by PaperMC. Customise RAM, flags and restart loop →

Rule of thumb: 2–4 GB for a few friends, 6–10 GB for a public server with plugins. Set -Xms equal to -Xmx and leave 1–1.5 GB for the operating system. How much RAM?

Docker

docker run -d -p 25565:25565 -e EULA=TRUE -e TYPE=LEAF -e VERSION=221203 --name mc itzg/minecraft-server

Uses the community itzg/minecraft-server image, which downloads the file itself.