ModsFinder

Items Stack

by MrGII

Items Stack lets server owners change the maximum stack size of individual items and item tags, with stack sizes above 99 allowed.

FabricClient and serverGNU Lesser General Public License v3.0 onlyOpen source1.21 – 26.2

What it does

Stack sizes are set through a single rules list. Each rule targets either one item or an item tag, and an exact item rule always overrides a tag rule. When two rules of the same type match, the later one wins. A rule that resets a tag to the normal stack size is available as well, and matching exact item rules can be removed.

The mod is intended for both client and server and is most useful on a server, where vanilla clients can keep normal inventory behavior. Editing happens through operator commands or through the config screen that Mod Menu generates. Commands and config changes apply immediately, and the current in-memory configuration can be saved to disk or discarded by reloading the saved file. Some client-side behavior needs the mod on the client, including Creative menu handling and how stack counts are drawn. Items with different components or damage values are still kept as separate stacks.

Key features

  1. Per-item stack size rules

    Each item can get its own maximum stack size, which overrides any tag rule that also applies to it.

  2. Per-tag stack size rules

    Every item in a chosen tag can receive the same maximum stack size from one rule.

  3. Stack sizes above 99

    Maximum stack sizes can be raised past the vanilla limit of 99.

  4. In-game rule commands

    Operators can add, remove and reset rules, change how many rules appear per page, and save or reload the configuration while the server runs.

  5. Config screen through Mod Menu

    With Mod Menu installed, the rules can be edited in the generated config screen, and changes take effect immediately.

Compatibility

Latest build for each game version and loader.

26.x4 of 4 versions with builds
26.22.0.0+26.1
26.1.22.0.0+26.1
26.1.12.0.0+26.1
26.12.0.0+26.1
1.21.x12 of 12 versions with builds
1.21.112.0.0+1.21.11
1.21.102.0.0+1.21.8
1.21.92.0.0+1.21.8
1.21.82.0.0+1.21.8
1.21.72.0.0+1.21.8
1.21.62.0.0+1.21.8
1.21.52.0.0+1.21.3
1.21.42.0.0+1.21.3
1.21.32.0.0+1.21.3
1.21.22.0.0+1.21.3
1.21.12.0.0
1.212.0.0
ReleaseBetaAlphaNot available

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

Requirements

Dependencies declared by the latest file for each loader.

Required 1

oωo (owo-lib)A general utility, GUI and config library for modding on Fabric and Quilt
Required

Optional 1

Mod MenuAdds a mod menu to view the list of mods you have installed.
Optional

Use cases

Who it’s for: Server owners who want to change stack sizes for specific items or tags, and players who run a client alongside a server that uses the mod.

How it compares

Full comparison

Bigger Stacks Size is a Fabric mod for 26.2 with a client and server environment, under All rights reserved and not open source. FatStack is a Fabric mod for 1.21.9 – 1.21.10, server-side only and open source under the Mozilla Public License 2.0, so players join it without installing anything. Items Stack, by contrast, is open source under the GNU Lesser General Public License v3.0 only.

ModLoadersGame versionsEnvironmentUpdated
Items StackFabric1.21 – 26.2Client and server2026-10-01
Bigger Stacks SizeFabric26.2Client and server2026-09-05
FatStackFabric1.21.9 – 1.21.10Server-side only2025-10-19

Questions

Does Items Stack need Fabric API?

It requires oωo (owo-lib). Mod Menu is optional and adds the config screen.

Do players need the mod on their client?

The mod is intended for both client and server. Vanilla clients can join a server that uses it for most normal inventory behavior, but Creative menu handling and stack count drawing need the mod on the client.

Who can change the rules on a server?

Commands require operator permission. Edits made through the command line or the Mod Menu config screen take effect at once.

In the catalog

Items Stack is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 13,894 mods support Minecraft 26.2.

Storage mods4,058Fabric modsMods for 26.213,894

Similar mods

Mouse Tweaksb1.7.3 – 26.3Inventory Profiles Next1.14.1 – 26.3Clumps1.10.2 – 26.3Shulker Box Tooltip1.16.5 – 26.3Traveler's Backpack1.12.2 – 26.3Tom's Simple Storage Mod1.15.2 – 26.3

What the author says

Allows you to change the maximum stack size of any item in Minecraft. Mod Menu is recommended, but not required.
MrGII, on the Modrinth page

Official listing

Owner
MrGII
Published
2024-07-27
Updated on Modrinth
2026-10-01
Facts verified
2026-10-15

Tags

EquipmentStorageUtility
Open on ModrinthCompare