
SyIDChange
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
A Minecraft plugin for 1.21.x, supporting Purpur and Paper, designed to help players who have changed their names migrate their data.
⬇ Download on ModrinthSyIDChange
A Minecraft plugin for 1.21.x, supporting Purpur and Paper, designed to help players who have changed their names migrate their data.
Author
Shiyuan
Features
Use /sychange <old_name> <new_name> to migrate inventory data from the old username to the new username.
Supported data migration:
- ✅ Inventory Data (Required)
- ✅ AuthMe Password
- ✅ Residence Claims
- ✅ Vault Balance
- ✅ PlayerTitle Titles
Installation
- Place the plugin into your server's
pluginsfolder - Restart the server or use a plugin manager to load it
- The plugin will automatically create configuration files
Usage
Commands
/sychange <old_name> <new_name>
Permissions
syidchange.use- Allows using the data migration command (Default: OP)syidchange.admin- Allows using all administrative features (Default: OP)
Example
/sychange OldName NewName
This will migrate all data from OldName to NewName.
Dependencies
Required:
- Paper/Purpur 1.21.x
Optional (Soft Dependencies):
- Vault + Economy Plugin - For migrating balances
- AuthMe - For migrating login passwords
- Residence - For migrating claims
- PlayerTitle - For migrating titles
Configuration
Configuration file located at plugins/SyIDChange/config.yml:
# Enable debug mode
debug: false
# Backup data before migration
backup-before-migrate: true
# Migration settings
migration:
inventory: true # Inventory data
authme: true # AuthMe password
residence: true # Residence claims
vault: true # Vault balance
playertitle: true # PlayerTitle titles
Notes
- Backup is important! Please backup your server data before using this plugin
- Original player data files will be renamed to
.dat.migrated_timestampas backup - If the new player already has data, a backup will be created before overwriting
- It is recommended to perform migration when the player is offline
Compilation
Compile using Maven:
mvn clean package
The compiled plugin will be located at target/SyIDChange-1.0.0.jar
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.21.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as SyIDChange-1.0.0.jar — drop this file into the mods folder
- Download size: 23 KB
- Download link checked 4 Oct 2026 — working
These come from our own check of the pack file, not from the source page.