CurseForge · Minecraft mod
InventoryLocker
Stop accidently dropping your items! Lock slots to prevent accidentally dropping or storing items you want to keep on you!
Quick answer
Which InventoryLocker release should I use?
inventorylocker-21.10.0.jar targets 1.21.10 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is InventoryLocker required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does inventorylocker-21.10.0.jar need?
inventorylocker-21.10.0.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add InventoryLocker without breaking your instance.
Built for inventorylocker-21.10.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use inventorylocker-21.10.0.jar. It targets 1.21.10 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside inventorylocker-21.10.0.jar. It opens that exact file at the source.
About this project
What does InventoryLocker add?
Inventory Locker
Tired of accidently dropping your items? Maybe you're playing a Skyblock map, and dropping an item could be the end of your run? Welcome to
INVENTORY LOCKER
This mod allows you to press ALT + Click on an item in your inventory, to lock it to your inventory. You won't be able to drop the item, or shift click it into chests. You can move it around like normal however. Simply ALT + Clicking again will unlock the item!
A Minecraft mod for NeoForge that allows players to lock items in their inventory, preventing accidental drops and movements. Inspired by Terraria's item favoriting system.
Features
- 🔒 Lock Items: Alt+Click to lock items in your inventory
- 🎮 Visual Feedback: Red borders appear around locked items in inventory and hotbar
- 🚫 Drop Protection: Locked items cannot be dropped with Q key
- 🌐 Multiplayer Compatible: Full server-side validation with client sync
- ✨ Item-Based Locking: Locks follow the item, not the slot - move it anywhere and it stays locked
Usage
Locking Items
- Open your inventory (E)
- Hold Alt and left-click on an item to lock/unlock it
Visual Indicators
- Locked items show a red border
- Works in both inventory and hotbar
What Gets Protected
- Cannot drop locked items with Q
- Cannot accidentally throw locked items out of inventory
- Locks persist through death (items stay locked when you respawn)
Developed by Kythosyer with AI assistance
Project description from CurseForge.
Pick your setup
InventoryLocker by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
InventoryLocker versions and loaders
inventorylocker-21.10.0.jar
12 Nov 2025
inventorylocker-21.1.1.jar
12 Nov 2025
Looking for an older file? The official CurseForge project page is in Resources.