Inventory Stacks+

Inventory Stack Upgrade adds three craftable tiers that increase your personal inventory stack size to 256, 1024, or 4096. Works with any mod's items and containers. Requires NeoForge 1.21.1
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invstackupgrade-1.0.1.jar

File nameinvstackupgrade-1.0.1.jar
Uploader
MythsmosMythsmos
Uploaded
Oct 14, 2026
Downloads
18
Size
23.3 KB
Mod Loaders
NeoForge
File ID
9168679
Type
R
Release
Supported game versions
  • 1.21.1
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Curse Maven Snippet

NeoForge

implementation "curse.maven:inventory-stack-plus-1559779:9168679"

Learn more about Curse Maven

What's new

Inventory Stack Upgrade 1.0.1 — Inventory Safety Fixes

  • Removed a background check that could delete items exceeding the equipped upgrade’s stack limit.
  • Fixed saving and loading of stacks larger than 99 items.
  • Improved synchronization of equipped upgrades between clients and servers.
  • Corrected stack limits to use the inventory owner’s upgrade.
  • Fixed upgrade-slot handling and added shift-click equipping.
  • Added protection against removing or downgrading an upgrade while oversized stacks remain. Split those stacks first; an in-game message explains when this is required.
  • Preserved normal limits for tools, armor, and items that stack to 16.

Backpack-specific compatibility is planned for a future update. This update cannot restore previously lost items.

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