Balanced Stack Sizes
by hbop
Balanced Stack Sizes raises the maximum stack size of many items through a config file, so bulk storage takes fewer slots on Fabric for 1.21.3.
What it does
Stack limits for items are set in a configuration file, which maps item identifiers or tags to a maximum stack size up to 2,147,483,646. Items that normally have durability can be made stackable, with the durability reduced across the stack. Entries higher in the list take priority over lower ones, so a specific item can override a broader tag.
The project targets the issue of stacks that feel too small in combat and inventory management, and a pre-made config file is offered alongside the mod to rebalance many bulk items at once. The server configuration is synced automatically to clients that join, so players see the same limits. Requires Fabric API and oωo (owo-lib). Balanced Stack Sizes runs on client and server and is released under the MIT License, with the source code and issue tracker public. The 1.0.0 file for 1.21.3 was published on 2024-12-01 on the alpha channel.
Key features
Config-based stack limits
Maximum stack sizes are set per item identifier or tag, with values up to 2,147,483,646.
Durable items stack
Items with durability can be made stackable, and durability is reduced across the stack.
Synced server settings
The server configuration is sent to clients when they join, keeping the limits consistent.
Readable large counts
Stack counts above 999 are shortened, and above 999,999 the text can still overflow into the next slot.
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
Use cases
Bulk storage
Players hold large quantities of cobblestone, dirt or ores in fewer slots by raising their stack limits.
Server rule sets
Server owners choose which items get larger stacks and the server pushes that list to every client.
Who it’s for: Players who carry large quantities of common items, and server owners who want to adjust stack limits for everyone on the server.
How it compares
Stack 99 is open source under the GNU Lesser General Public License v3.0 or later and runs on Fabric for 1.21.11, while Balanced Stack Sizes targets 1.21.3. Data Driven Stack Sizes is server-side only, licensed under Creative Commons Attribution Non Commercial Share Alike 4.0, and covers 1.21 – 1.21.4 on Fabric, so clients need nothing installed. LoxyStackTweaks is client and server, closed source under All rights reserved, and built for 1.21.1.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Balanced Stack Sizes | Fabric | 1.21.3 | Client and server | 2024-12-01 |
| Stack 99 | Fabric | 1.21.11 | Client and server | 2026-02-21 |
| Data Driven Stack Sizes | Fabric | 1.21 – 1.21.4 | Server-side only | 2025-03-15 |
| LoxyStackTweaks | Fabric | 1.21.1 | Client and server | 2026-07-26 |
Questions
Does Balanced Stack Sizes need Fabric API?
Does every player need the mod on a server?
Can a single item get a larger stack than its tag allows?
In the catalog
Balanced Stack Sizes is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 13,252 mods support Minecraft 1.21.3.
More from hbop
Similar mods
What the author says
A pre-made config file is available to download alongside each version which affects various bulk items, and items whose stack size is too small. This configuration aims to increase stack sizes in a balanced way to combat the inventory space issue. stackSizes: A map of item identifiers or tags to their maximum stack…
Official listing
- Modrinth page
- modrinth.com/mod/resizable-stacks
- Owner
- hbop
- Published
- 2024-11-27
- Updated on Modrinth
- 2024-12-01
- Facts verified
- 2026-10-15