ModsFinder

New ItemDuper

by soulsborne123

New ItemDuper is a Fabric mod for Minecraft 1.21.1 that duplicates the item held in the hand with a single press of G.

FabricClient and serverAll rights reserved1.21.1

What it does

Pressing G while holding an item creates a copy of it in one step. The mod is built for Minecraft 1.21.1 and needs to be installed before a player joins a world, so the key is active from the first session. Both the server and every player need it, and it is released under All rights reserved, so it is not open source.

Key features

  1. Single-key duplication

    Pressing G once copies the item currently held in the hand, with no command or menu needed.

  2. Held-item focus

    The copy comes from the item in the main hand, which keeps the action tied to what the player is carrying.

  3. Installed before joining

    The key works once the mod is present when the player enters the world, so it is set up before play starts.

Compatibility

Latest build for each game version and loader.

No stable releases
Every published file is a beta or alpha build.
1.21.11.21.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

ItemDuper-Pro is a Fabric mod for 1.21.6 – 1.21.7, with the same client and server environment and a closed All rights reserved license. Dupe Key is a Fabric mod for 1.21 – 26.1 that is client-side only and not open source. Dupe Fun is a Fabric mod for 1.21 – 26.1.2 that is server-side only and also not open source.

ModLoadersGame versionsEnvironmentUpdated
New ItemDuperFabric1.21.1Client and server2026-07-18
ItemDuper-ProFabric1.21.6 – 1.21.7Client and server2025-07-05
Dupe KeyFabric1.21 – 26.1Client-side only2026-03-27
Dupe FunFabric1.21 – 26.1.2Server-side only2026-05-26

Questions

Does New ItemDuper need Fabric API?

No required dependency is listed for Fabric.

Does the server need New ItemDuper installed?

Yes. The server and every player need the mod installed.

What the author says

Duplicate the item in your hand with a single press of G! Built for Minecraft 1.21.1. Install the mod before joining your world, then press G to instantly duplicate your held item every time!!! Enjoy!
soulsborne123, on the Modrinth page

Official listing

Owner
soulsborne123
Published
2026-07-18
Updated on Modrinth
2026-07-18
Facts verified
2026-10-15
Open on ModrinthCompare