DupeMe Mod (1.21.7, 1.21.1) – Quick and Simple Item Duplication for Minecraft

Q: Will it work in survival mode?

Yes, but /dupe requires cheats enabled. The keybind works client-side, depending on the setup.

DupeMe Mod (1.21.7, 1.21.1) is a lightweight utility mod designed for players who want fast and effortless item duplication in Minecraft. With just a simple command or a configurable hotkey, you can instantly duplicate the item you’re holding in your main hand perfect for testing, building, or modded sandbox play.

Whether you’re developing modpacks, creating adventure maps, or just want unlimited resources for creative building, DupeMe offers a no-fuss solution. It works even if your inventory is full, placing the duplicate item in the next available slot without error or lag. While ideal for creative servers and mod testing, it should be used responsibly in survival to avoid unbalanced gameplay.

Features:

/dupe Command:
Instantly duplicates the item in your main hand by typing /dupe in chat (cheats must be enabled).
Keybind Support:
A default hotkey ( = key ) allows for quick duplication without typing. Keybinding can be changed in settings.
Inventory-Friendly:
The mod will safely add the duplicated item to your inventory, even if it’s full no crashes, no lost items.
Supports All Item Types:
From basic blocks to enchanted gear or modded items, DupeMe can duplicate nearly anything you hold.
Lightweight and Conflict-Free:
Adds no worldgen or complex systems just a focused duplication tool for controlled environments.
Fabric Modloader Support:
Built exclusively for the Fabric ecosystem and compatible with most Fabric-based modpacks.

Screenshots:

Requires:

Fabric API

How to install:

How To Download & Install Mods with Minecraft Forge

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Why use DupeMe Mod?

For builders, testers, and modpack developers, DupeMe Mod provides a fast and convenient way to replicate items without creative mode’s clunky inventory management. Instead of searching through menus, just hold the item you want and duplicate it instantly.

This makes it ideal for testing mod interactions, duplicating tools with specific NBT data, or rapidly collecting blocks for large-scale builds. It’s also great for adventure map creators who need to mass-duplicate special items. While not suited for balanced survival play, it’s a powerful tool in the right hands.

FAQs

How do I use DupeMe in-game?

Hold the item you want to duplicate in your main hand and either type /dupe or press the default = key to duplicate it.

Can I change the keybind?

Yes. You can reassign the duplication key from the Minecraft controls settings menu.

Will it work in survival mode?

Yes, but /dupe requires cheats enabled. The keybind works client-side, depending on the setup.

Does it support modded items?

Yes. DupeMe can duplicate any item you’re holding, including those added by other mods.

Is this safe for servers?

It depends. On open servers, unrestricted use can cause economy or gameplay imbalance. It’s best used in testing, private, or creative environments.