ModsFinder

Stack Size Tweaks

by Timbas

Stack Size Tweaks lets server owners and players raise the maximum stack size of individual items through a config file, up to values as high as one billion.

FabricNeoForgeClient and serverMIT LicenseOpen source1.21 – 26.3

What it does

Stack limits are set in a stacksizetweaks.json5 file, and the values take effect only after a restart. The file can also be edited in the config screen reached through Mod Menu on Fabric and NeoForge, so no manual file editing is needed there. Higher counts are formatted so large numbers stay readable in the inventory. The mod needs Architectury API, Fabric API and YetAnotherConfigLib (YACL), and Mod Menu is optional. Servers that run it need every player to install it too. Files are published for Fabric and NeoForge across 15 release versions, 1.21 – 26.3, under the MIT License, and the project is open source.

Key features

  1. Custom stack sizes

    Maximum stack sizes for items can be changed in the config, with values up to one billion.

  2. Readable large counts

    Counts above the usual limits are formatted in the inventory, so large stacks stay readable.

  3. Config screen access

    Settings can be opened through Mod Menu, which offers a screen as an alternative to editing the JSON5 file.

Compatibility

Latest build for each game version and loader.

26.x5 of 5 versions with builds
26.30.4.1+26.30.4.1+26.3
26.20.4.1+26.20.4.1+26.2
26.1.20.3.4+26.10.3.4+26.1
26.1.10.3.4+26.10.3.4+26.1
26.10.3.4+26.10.3.4+26.1
1.21.x10 of 10 versions with builds
1.21.110.3.4+1.21.110.3.4+1.21.11
1.21.100.3.4+1.21.90.3.4+1.21.9
1.21.90.3.4+1.21.90.3.4+1.21.9
1.21.80.3.4+1.21.80.3.4+1.21.8
1.21.50.3.4+1.21.50.3.4+1.21.5
1.21.40.3.4+1.21.20.3.4+1.21.2
1.21.30.3.4+1.21.20.3.4+1.21.2
1.21.20.3.4+1.21.20.3.4+1.21.2
1.21.10.3.4+1.210.3.4+1.21
1.210.3.4+1.210.3.4+1.21
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 3

Architectury APIAn intermediary api aimed to ease developing multiplatform mods.
Required
Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required
YetAnotherConfigLib (YACL)A builder-based configuration library for Minecraft!
Required

Optional 1

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

Questions

Does Stack Size Tweaks need to be installed on the server?

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

Why do stack size changes need a restart?

Edits to the stack size values only take effect after the game restarts, so the config must be saved before relaunching.

In the catalog

Stack Size Tweaks is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 8,071 mods support Minecraft 26.3.

Storage mods4,058Fabric modsMods for 26.38,071

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

It let's you change stack sizes up to 1 billion using the config. It makes higher values inside the inventory much more readable alongside the formatting.
Timbas, on the Modrinth page

Official listing

Owner
Timbas
Published
2026-04-04
Updated on Modrinth
2026-09-25
Facts verified
2026-10-15

Tags

Game mechanicsStorageUtilityManagement
Open on ModrinthCompare