CurseForge · Minecraft mod

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

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Inventory Stacks+ release should I use?

Updated 2 months ago

Latest stable file invstackupgrade-1.0.0.jar

Game version 1.21.1

Loader NeoForge

Inventory Stacks+ invstackupgrade-1.0.0.jar targets 1.21.1 with NeoForge. The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server. No extra mods listed for this file.

Where it goes

Is Inventory Stacks+ required on the client, server, or both?

The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.

Client Source doesn’t say

Dedicated server Source doesn’t say

Loader for this release NeoForge

Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does Inventory Stacks+ invstackupgrade-1.0.0.jar need?

invstackupgrade-1.0.0.jar. Change the file and its required mods may change too.

No extra mods listed for this file

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 Inventory Stacks+ without breaking your instance.

Built for Inventory Stacks+ invstackupgrade-1.0.0.jar. Pick another file and the loader, install side or required mods may change.

01
Stick to this file

Use invstackupgrade-1.0.0.jar. It targets 1.21.1 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 it belongs on the client. The project page does not say whether it belongs on the dedicated server.
04
Pick the file you checked

Use the “Get this file” button beside invstackupgrade-1.0.0.jar. It opens that exact file at the source.

About this project

What does Inventory Stacks+ add?

Inventory Stack Upgrade

Tired of managing stacks of 64 when you're deep into a grind? Inventory Stack Upgrade solves that by letting you craft and equip upgrade items that permanently raise your personal inventory stack limit — no config files, no commands, just craft and slot.

Inspired by the progression-based upgrade system in Sophisticated Backpacks.

How It Works

Craft one of the three upgrade items and place it into the dedicated upgrade slot found in your inventory screen, located above the crafting output slot. Your stack size limit increases immediately across your entire inventory. Remove the item from the slot at any time to revert back to normal.

Upgrade Tiers

Stack Upgrade I — 256 stacks

F I F
I L I
F I F

F = Any Small Flower | I = Iron Ingot | L = Leather

Stack Upgrade II — 1,024 stacks

D D D
D U D
D D D

D = Diamond | U = Stack Upgrade I

Stack Upgrade III — 4,096 stacks

N N N
N U N
N N N

N = Netherite Ingot | U = Stack Upgrade II

Features

Three progression tiers — earn your way up from 256 to 1,024 to 4,096
Dedicated inventory slot — clean integration into the vanilla inventory screen
Works everywhere — stack limits apply when picking up items, moving stacks, shift-clicking, and transferring to chests and other containers
Per-player — each player on a server has their own independent upgrade level
Death persistent — your equipped upgrade survives death and dimension changes
Any item supported — applies to all stackable items from any mod

Compatibility

Tested and working alongside Create, Minecolonies, Twilight Forest, Sophisticated Backpacks, and a wide range of other popular NeoForge mods. Because the upgrade hooks into base inventory and slot logic rather than patching individual items or containers, it works universally with modded items and storage blocks.

Requirements

Minecraft: 1.21.1
Loader: NeoForge 21.1.x

Project description from CurseForge.

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