ModsFinder

One Stack Size

by bikerboys

One Stack Size changes every item in the game to a maximum stack of 1, for players who want each item handled individually.

FabricClient and serverAll rights reserved1.20 – 1.21.1

What it does

Once installed, every single item in the game stacks to a size of 1, so a slot never holds more than one copy of anything. Cobblestone and other default items keep their own counts elsewhere, but the mod removes the usual stacking limits from the inventory. Client and server both need the mod for the rule to apply consistently across a session.

Key features

  1. Single-item stacks

    Every item stacks to a maximum of 1, so each slot holds exactly one item of any type.

  2. Stack limit override

    The default stack sizes such as 64 for cobblestone are replaced by the single-item limit.

  3. Fabric build

    A Fabric build is published, with 1.0.0 for 1.21.1 as the latest file.

Compatibility

Latest build for each game version and loader.

1.21.11.0.0
1.20.41.0.0
1.20.31.0.0
1.20.21.0.0
1.20.11.0.0
1.201.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

Stack Size Edit runs on client and server, is released under the GNU General Public License v3.0 only and covers 1.20.1 – 1.20.4 on Fabric. Stacks Are Stacks is server-side only, uses a custom license and has files for 1.20 – 26.3.

ModLoadersGame versionsEnvironmentUpdated
One Stack SizeFabric1.20 – 1.21.1Client and server2025-06-02
Stack Size EditFabric1.20.1 – 1.20.4Client and server2024-10-14
Stacks Are StacksFabric1.20 – 26.3Server-side only2026-09-21

Questions

Does One Stack Size need Fabric API?

The mod is listed for Fabric only. Files for 1.21.1 are published, and the mod is not listed for Forge or NeoForge.

Does One Stack Size have to be installed on the server?

Yes. A server running it needs every connecting player to have it too.

In the catalog

One Stack Size is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 32,366 mods support Minecraft 1.21.1.

Optimization mods3,545Fabric modsMods for 1.21.132,366

More from bikerboys

All projects
Underwater Swim Fix (MC-220390)1.13 – 1.21.11Clearviews1.20.1 – 26.2Remove Blindess1.16.5 – 1.21.1Random Torch Dissapearance1.20.1 – 1.20.4Cute Animal Models Backport1.21.11Zombies attack every entity!1.20.1 – 1.21.1

Similar mods

Sodium1.16.3 – 26.3Iris Shaders1.16.5 – 26.3Entity Cullingb1.7.3 – 26.3FerriteCore1.16.5 – 26.3ImmediatelyFast1.18.2 – 26.3Sodium Extra1.16.2 – 26.3

What the author says

Ever hated yourself or thought this game was too easy? Then dont worry! This mod makes every single item in the game have a stack size of 1. 64 cobblestone? No more, 16 enderpearls? No more. if you want any other version then wait or ask me on discord: michiel1106
bikerboys, on the Modrinth page

Official listing

Owner
bikerboys
Published
2024-09-28
Updated on Modrinth
2025-06-02
Facts verified
2026-10-15

Tags

Game mechanicsOptimizationStorageManagementTransportationUtility
Open on ModrinthCompare