ItemStacker
by zimao116
ItemStacker changes how identical item stacks merge on a Fabric server, and it also shows total counts for merged items.
What it does
Identical blocks and items are merged into shared stacks, and each merged stack displays its combined total count and item name. The changes apply to vanilla item merging only, and the mod runs on the server side alone, so singleplayer worlds can use it too. Settings are changed through an in-game settings screen, and OP players hold the permission to change them while singleplayer users configure everything without extra permissions. ItemStacker is released under the MIT License and is not open source. Files are published for Fabric, for the single game version 1.21.11.
Key features
Merged stack totals
Merged items show their name and combined count, so a stack of mixed items reads as one entry.
Faster item merging
The merging step of vanilla item handling is reworked to complete more quickly on the server.
In-game settings screen
Options are changed through an ItemStacker settings screen, which OP players can open on a server.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Questions
Does ItemStacker need to be installed on the client?
Can singleplayer players change the settings?
In the catalog
ItemStacker is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.
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What the author says
Note: ItemStacker modifies the vanilla item merging system and only works in server-side environments and singleplayer. To change a setting, enter /itemstacker settings... [ ].
Official listing
- Modrinth page
- modrinth.com/mod/itemstacker
- Owner
- zimao116
- Published
- 2026-06-01
- Updated on Modrinth
- 2026-06-06
- Facts verified
- 2026-10-15