Maikura Inventory Expansion
by MaikuraKobo
Maikura Inventory Expansion gives each player extra inventory slots, sized from 3×3 to 6×9 and up to 54 slots, shown inside the vanilla inventory screen.
What it does
Maikura Inventory Expansion adds a configurable block of extra slots to the vanilla inventory GUI. The size can be set from a 3×3 grid of 9 slots up to a 6×9 grid of 54 slots, and the slots appear directly in the existing inventory screen. Storage is kept per player, so each player's extra space is separate, and that data stays available after rejoining the world.
When the size is reduced, items stored in slots that fall outside the visible range are kept hidden rather than deleted. Expanding the inventory again makes them visible. Stored items are also kept safe through death. Settings can be changed through Mod Menu configuration support.
The mod is client and server, so the server and every player need it. It is open source under the MIT License and is published for Fabric only, for 1.21.11, with Fabric API required.
Key features
Configurable slot count
The number of extra slots is set from 9 up to 54, in grids from 3×3 to 6×9.
Slots in the vanilla inventory
The extra slots are drawn in the existing inventory screen, not in a separate window.
Per-player storage
Each player keeps their own extra inventory, which remains after rejoining the world.
Hidden items on resize
Items in slots that go out of view are held hidden, and they reappear when the size is raised again.
Death-safe storage
Items in the extra slots are kept safe when the player dies.
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 1
Use cases
Single-player survival
A player who needs more room before building a storage system can enlarge the inventory without placing a chest.
Multiplayer servers
Server owners can run the mod so each player gets an individual extra inventory with the same size rules.
Who it’s for: Players who want more carrying space in the vanilla inventory, and server owners who want per-player extra slots on a Fabric server.
How it compares
Bigger Inventory is a Fabric mod for 26.2, also client and server, but it is licensed under the Apache License 2.0 and is not open source. SlotID Tooltip is a Fabric mod for 1.21.1 – 1.21.11 that is client-side only and does not add slots, so it does not replace this mod. Mini CreATive is client and server for 1.21.11 under All rights reserved and is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Maikura Inventory Expansion | Fabric | 1.21.11 | Client and server | 2026-06-20 |
| Bigger Inventory | Fabric | 26.2 | Client and server | 2026-08-17 |
| SlotID Tooltip | Fabric | 1.21.1 – 1.21.11 | Client-side only | 2026-02-24 |
| Mini CreATive | Fabric | 1.21.11 | Client and server | 2026-02-15 |
Questions
Does Maikura Inventory Expansion need Fabric API?
Does the server need the mod installed?
What happens to items when the inventory is made smaller?
In the catalog
Maikura Inventory Expansion is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from MaikuraKobo
Similar mods
What the author says
Adds configurable extra inventory space directly to the vanilla inventory screen. This allows inventory sizes ranging from 3×3 (9 slots) up to 6×9 (54 slots).
Official listing
- Modrinth page
- modrinth.com/mod/maikura-inventory-expansion
- Owner
- MaikuraKobo
- Published
- 2026-06-18
- Updated on Modrinth
- 2026-06-20
- Facts verified
- 2026-10-15