Dupe Key

Item Duper Dupe items directly from a simple GUI — no commands needed. Press K (configurable) to open the Item Duper menu. Hold any item in your main hand and click Dupe Item to instantly duplicate it into your inventory. Features

🎮 Simple and clean GUI ⌨️ Keybind to open the menu (default: K) 📦 Copies full item data — including Shulker Box contents (Creative mode) ✅ Works in Creative mode (full NBT copy) ✅ Works in Survival/Adventure with OP permissions (via /give) 🔁 Compatible with Minecraft 1.21 – 1.21.11

How to use

Hold the item you want to duplicate in your main hand Press K to open the menu Click Dupe Item Done!

Notes

In Creative mode, items are duplicated with full data (enchantments, NBT, Shulker Box contents) In Survival/Adventure, requires OP or cheats enabled — item data like Shulker Box contents cannot be copied due to Minecraft limitations

Requirements

Fabric Loader ≥ 0.15.0 Fabric API Minecraft 1.21 – 1.21.11