Stack Size Plus

Makes many vanilla items stack to 64.

48 Downloads

fabricgame-mechanicsutility

Rent Server with this Mod

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About this Mod

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Stack Size Plus increases the stack size of many normally non-stackable items to 64.

This helps inventory management while preserving item data rules. Items that contain data will only stack with identical variants.

Stackable Items

Armor stands
Banner patterns
Banners
Beds
Boats (Regular and chest)
Buckets (Empty)
Cake
Music discs
Eggs (Regular, brown, and blue)
Ender pearls
Enchanted books
Goat horns
Honey bottles
Minecarts
Potions (Regular, splash, and lingering)
Saddles
Shulker boxes (Empty)
Signs (Reuglar and hanging)
Snowballs
Stews
Totems of Undying
Writable books
Horse armor
Nautilus armor
Wolf armor

Inspired by Jodek's Bigger Stack Size datapack.

Available Versions

Stack Size Plus 1.1release

MC 1.21.11fabric

March 19, 2026

Stack Size Plus 1.0.0release

MC 1.21.11fabric

March 13, 2026

How to Install Stack Size Plus on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

Install Mod

Open the mod browser in the dashboard and search for "Stack Size Plus". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Stack Size Plus server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is Stack Size Plus compatible with fabric?

Stack Size Plus officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Stack Size Plus – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Stack Size Plus consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.