
LockSlot
Prevents accidental drop of an item
Screenshots

About this Mod
🔒 Slot Lock — Inventory Item Protection
Tired of accidentally dropping important items? This mod solves the problem once and for all.
Slot Lock allows you to lock any inventory slots so you can’t accidentally drop or lose your items.
✨ Features:
- 🔒 Lock individual slots (Q from hotbar or inventory)
- 🚫 Prevent dropping items from locked slots
- 🪶 Lightweight and fast — no FPS impact
- ✨ You can still drop an item by picking it up from your inventory and clicking on an empty space outside of your inventory.
🎯 Why use it:
- Prevent losing important items
- Perfect for PvP and survival, where every item matters
🛠️ Compatibility:
- Works on Fabric
- Supported Minecraft version: 1.21.4
📌 Usage:
/lockslot — show help
/lockslot <1-9> — toggle hotbar slot lock
/lockslot inv <1-27> — toggle inventory slot lock
/lockslot color — list available colors
/lockslot color <red|blue|green|orange|yellow|purple|cyan|pink> — change icon color
/lockslot list — show locked slots
/lockslot all — remove all locks
/lockslot clear — same as "all"
📩 For questions and bug reports: Telegram / Discord — @b1nt1n
Available Versions
How to Install LockSlot on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.4).
Install Mod
Open the mod browser in the dashboard and search for "LockSlot". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.4
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
LockSlot 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 (1.21.4). You can switch loaders with one click in the panel.
Is LockSlot compatible with fabric?
LockSlot officially supports fabric for Minecraft 1.21.4. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with LockSlot – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if LockSlot 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.
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Rent Modded Server
Install LockSlot with just one click on your server.