custom-Stacksize
this project adds the abillity to customize your stack size off items standart is 4048 and if you want you can just set it higher or lower
⬇ Download on ModrinthStackSize
A lightweight server-side plugin that removes the default stack size limit of 64 and lets you stack items up to any amount you want. The default is set to 4048, but you can easily change it in the config file.
Features:
- Configurable global stack size limit for all stackable items
- Totems of Undying are made stackable
- Non-stackable items (swords, armor, tools, etc.) remain unaffected
- Simple JSON config — just one value to change
Configuration: After the first server start, edit plugins/StackSize/stacksize.json: { "maxStackSize": 4048 } Change the value to whatever you like and restart the server.
Requirements:
- Purpur or Paper 1.21.1+
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.1, 1.21.10, 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as StackSize-1.0.0.jar — drop this file into the mods folder
- Download size: 4 KB
- Download link checked 9 Sept 2026 — working
These come from our own check of the pack file, not from the source page.