Compatibility
Minecraft: Java Edition
1.21–1.21.9
1.20.1–1.20.6
1.19.x
1.18.x
Platforms
Supported environments
Creators
Details
Licensed MIT
Published 5 months ago
Updated 4 weeks ago
Inventory Expansion - yyz's Backpack Mod
Directly Integrated Backpacks

🌟 Mod Highlights
⚡ Seamless GUI Integration
Backpack slots appear directly in work GUIs (inventory/crafting table/chest etc.) without opening extra interfaces.
🛠️ Enhanced Features
- 🖱️ Item Transfer
Shift+Left Click→ Transfer to main inventory
Shift+Right Click→ Transfer to backpack
Double Click→ Auto sort items - 📦 Item Collection
Automatically stores items in backpack when inventory is full
Backpack drops as single item upon death (contents preserved) - 🔥 JEI/REI/EMI Integration
Supports using backpack items directly in JEI/REI/EMI crafting
Real-time backpack content display in recipe interface - 💍 Accessory Support
Backpacks can be placed in Curios/Trinkets slots 
🎒 Backpack Tiers
| Backpack Type | Extra Slots | Special Ability | 
|---|---|---|
| Iron | +18 | Basic capacity | 
| Gold | +36 | Basic capacity | 
| Diamond | +54 | Basic capacity | 
| Netherite | +54 | Fire Immunity | 
⚙️ Compatibility
Status Key
- ✅ Fully Compatible
 - ⚠️ Partial Support
 - ⌛ Planned
 - ❌ Unsupported
 
Feature Support Status
| Feature | 1.21.6 | 1.21.5 | 1.21.4 | 1.21.2-1.21.3 | 1.21.1 | 1.20.5-1.20.6 | 1.20.2-1.20.4 | 1.20.1 | 1.19.4 | 1.19.3 | 1.19-1.19.2 | 1.18-1.18.2 | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| JEI | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ⌛ | ⌛ | ⌛ | ⌛ | ||
| Curios | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ⌛ | ⌛ | ⌛ | ⌛ | ||
| Trinkets | ✅ | ✅ | ✅ | ✅ | ⌛ | ⌛ | ⌛ | ⌛ | ||||
| Quark | ⚠️ | ⚠️ | ⚠️ | |||||||||
| Accessories | ⚠️ | ⚠️ | ⚠️ | ⚠️ | ||||||||
| REI | ⌛ | ✅ | ✅ | ✅ | ✅ | ✅ | ✅ | ⌛ | ⌛ | ⌛ | ⌛ | |
| EMI | ✅ | ✅ | ✅ | ✅ | ⌛ | ⌛ | ⌛ | ⌛ | ||||
| Inventorio | ⚠️ | ⚠️ | ⌛ | ⌛ | ⌛ | ⌛ | ||||||
| IPN | ⚠️ | ⚠️ | ⚠️ | ❌ | ⚠️ | ❌ | ❌ | ⚠️ | ❌ | ❌ | ❌ | ❌ | 
| Inventory Sorting | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | 
| 3D Models | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | 
| Doggy Talents Next | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | ⌛ | 
| AE2 | ⌛ | ⌛ | ⌛ | ⌛ | ✅ | ⌛ | ⌛ | ✅ | ⌛ | ⌛ | ⌛ | ⌛ | 
❓ Why This Backpack?
Traditional backpack mods = mobile chests requiring separate GUIs. Our solution:
- Seamless experience - Access backpack items directly in work GUIs
 - Native interaction - Full support for recipe book/JEI/REI/EMI
 - Backpack swapping - Swap when placing backpack in backpack slot/inside
 - Continuous expansion - Growing mod compatibility support
 
⚠️ Current Status
The mod is currently in a very early stage. If you find any bugs, you can report them via GitHub or Discord
❗ Found an issue or have suggestions? Report now!
🔧 In development:
- More GUI support
 - Backpack 3D models
 - Expanded mod compatibility
 
✨ Design Philosophy: Make backpacks a natural extension of the main inventory



