IG: Stack Size Adjuster
by dasikigaijin
IG: Stack Size Adjuster raises the item stack limit for Fabric servers, with per-category thresholds that can reach 9,999 items per inventory slot.
What it does
The mod changes how many items fit in one inventory slot. Stacks can be expanded server-wide, and each category can get its own custom threshold, for example 1,000 raw building materials or 256 food. Limits can be changed at runtime, so a server owner does not need to restart to scale weapons, armor, blocks or consumables.
The mod targets large-scale projects such as castles, nether highways, terraformed mountains and automated storage, where sorting dozens of shulker boxes becomes the main chore. Shift-clicking a crafted item fills available mega-stacks, and a double chest of cobblestone can condense into a few slots. It requires Dasik Library and Fabric API, and it is published for Fabric only, across 5 release versions, 1.20.1 – 26.3. It is server-side only, so players join without installing it. The mod is open source under the GNU General Public License v3.0 only.
Key features
Universal category limits
Vanilla's 64-item ceiling is lifted for the categories a server owner selects, including food and ores.
Targeted category overrides
Each item category can receive its own stack threshold, set independently of the others.
Villager merchant protection
Trade exchange slots are clamped to standard limits, which blocks overflow exploits with villagers and wandering traders.
Crafting grid precision
Shift-clicking crafted items fills mega-stacks without leaving leftover items scattered on the floor.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Required by 1 mod
Use cases
Large builds
Building materials stack up to the configured limit, so a project needs fewer chests and fewer trips.
Warehouse storage
Matching items shift-clicked into a storage system gather together in fewer slots.
Who it’s for: Server owners running survival or creative worlds who want larger stacks for building materials and storage, and who can set those limits in the configuration.
How it compares
Stack Size Edit is open source under the GNU General Public License v3.0 only, is Fabric-only and is client and server, with files for 1.20.1 – 1.20.4. Lenient Stack Size is server-side only and open source under the MIT License, with Fabric and NeoForge files for 1.21.10 – 26.2. Bigger Stacks Size is client and server, is not open source and is published under All rights reserved for 26.2.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| IG: Stack Size Adjuster | Fabric | 1.20.1 – 26.3 | Server-side only | 2026-10-11 |
| Stack Size Edit | Fabric | 1.20.1 – 1.20.4 | Client and server | 2024-10-14 |
| Lenient Stack Size | Fabric and NeoForge | 1.21.10 – 26.2 | Server-side only | 2026-08-02 |
| Bigger Stacks Size | Fabric | 26.2 | Client and server | 2026-09-05 |
Questions
Does IG: Stack Size Adjuster need Fabric API?
Does a player need the mod to join a server that runs it?
Which game versions does the mod support?
In the catalog
IG: Stack Size Adjuster 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.
More from dasikigaijin
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What the author says
Minecraft's universal 64-item stack size ceiling was decided over 15 years ago when the game had a fraction of today's blocks, items, and crafting complexity. In modern survival, undertaking large-scale builds—such as castles, nether highways, terraformed mountains, or automated storage warehouses—demands endless…
Official listing
- Modrinth page
- modrinth.com/mod/ig-stack-size-adjuster
- Owner
- dasikigaijin
- Published
- 2026-07-06
- Updated on Modrinth
- 2026-10-11
- Facts verified
- 2026-10-15