StackUpper
Increase item stack with custom rule support!
About this Mod
A NeoForge mod that allows changing item stacksize up to 2^31-1, with custom rules.
Scripting
https://github.com/MaiKokain/StackUpper/wiki/Scripting
Note
Available Versions
How to Install StackUpper on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set neoforge Loader
In the panel under "Egg", select the neoforge loader and matching Minecraft version (26.1.2).
Install Mod
Open the mod browser in the dashboard and search for "StackUpper". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
26.1.2, 26.1.1, 26.1 (+14 more)
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
StackUpper server crashes on startup – what to do?
Most common cause: wrong neoforge 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 (26.1.2). You can switch loaders with one click in the panel.
Is StackUpper compatible with neoforge?
StackUpper officially supports neoforge for Minecraft 26.1.2, 26.1.1, 26.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with StackUpper – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if StackUpper 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.
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Rent Modded Server
Install StackUpper with just one click on your server.