ItemDuper-Pro

ItemDuper-Pro

Perfect for players who want convenient item duplication with modern improvements and reliable functionality.

by
1.5K Downloads
fabriccursedgame-mechanicsoptimization
Rent Server with this Mod

Screenshots

Progress text when duped

About this Mod

ItemDuper-Pro

A recreated and enhanced version of the original DupeTrigger mod by AstraLucid

What it does

Press a single keybind to instantly duplicate items in your main hand - no commands, no cheats required!

Key Features

  • One-key duplication - Default 'G' key (fully customizable)
  • Enhanced stack limits - Duplicate up to 2,048 items per stack
  • Server-side synchronization - Real duplication that persists when moved or placed
  • Customizable controls - Change keybind in Controls menu under "ItemDuper-Pro"
  • No cheats needed - Works in survival mode and multiplayer servers
  • Smart inventory management - Handles full inventories gracefully

How to Use

  1. Hold any item in your main hand
  2. Press 'G' (or your custom keybind)
  3. Watch your items double instantly!
  4. Repeat to keep doubling (1→2→4→8→16→32→64→128→256→512→1024→2048)

Configuration

  • Open Options → Controls → Key Binds
  • Find "ItemDuper-Pro" category
  • Set your preferred key for "Duplicate Item"

Requirements

  • Fabric Loader 0.16.14+
  • Fabric API

Credits

  • Original concept: AstraLucid (DupeTrigger mod)
  • Enhanced recreation: Void

Perfect for creative building, testing, and convenient item management!

Available Versions

ItemDuper-Prorelease
MC 1.21.7fabric
July 5, 2025
ItemDuper-Prorelease
MC 1.21.6fabric
June 18, 2025

How to Install ItemDuper-Pro on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.7).

3

Install Mod

Open the mod browser in the dashboard and search for "ItemDuper-Pro". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.7, 1.21.6

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

ItemDuper-Pro server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.7). You can switch loaders with one click in the panel.

Is ItemDuper-Pro compatible with fabric?

ItemDuper-Pro officially supports fabric for Minecraft 1.21.7, 1.21.6. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with ItemDuper-Pro – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if ItemDuper-Pro consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install ItemDuper-Pro with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
LicenseRef-All-Rights-Reserved
Server-side
Required

Supported Versions

1.21.71.21.6