Description
Traveler’s Backpack Stack Upgrade
A small Fabric 1.20.1 addon for Traveler’s Backpack 9.1.54 that adds stack-size upgrades directly to the backpack.
The addon allows normal stackable items to exceed the vanilla 64-item limit inside Traveler’s Backpack.
Tiers
- Iron Stack Upgrade → 2× stack size
64 → 128 - Gold Stack Upgrade → 4× stack size
64 → 256 - Diamond Stack Upgrade → 8× stack size
64 → 512
Non-stackable items remain non-stackable.
Crafting
First craft the Stack Upgrade Base:
[ ][Blank Upgrade][ ]
[ ][Chest ][ ]
[ ][ ][ ]
Then upgrade it through the tiers:
Iron Tier
[Iron][Iron][Iron]
[Iron][Base][Iron]
[Iron][Iron][Iron]
Gold Tier
[Gold][Gold][Gold]
[Gold][Iron Upgrade][Gold]
[Gold][Gold][Gold]
Diamond Tier
[Diamond][Diamond][Diamond]
[Diamond][Gold Upgrade][Diamond]
[Diamond][Diamond][Diamond]
Requirements
- Minecraft 1.20.1
- Fabric
- Traveler’s Backpack 9.1.54
- Fabric API
- Traveler’s Backpack dependencies
The addon is designed to work with existing Traveler’s Backpacks and uses the normal backpack upgrade slots.
It also supports removing/swapping upgrade tiers and keeps the active stack limit synchronized when changing between Iron, Gold and Diamond tiers.




