
Modrinth · Minecraft mod
Stack Size Fix
Makes item counts for items with invalid stack sizes visible.
Quick answer
Which Stack Size Fix release matches 26.1.2?
Stack Size Fix 1.0.0+26.1-fabric targets 26.1, 26.1.1, 26.1.2 with Fabric. It must be installed on the client. Do not install it on the dedicated server. No extra mods listed for this file.
Where it goes
Is Stack Size Fix required on the client, server, or both?
It must be installed on the client. Do not install it on the dedicated server.
This file is marked client-only.
What else does Stack Size Fix 1.0.0+26.1-fabric need?
1.0.0+26.1-fabric on 26.1.2. Every mod below is checked against that same setup.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Stack Size Fix without breaking your instance.
Built for Stack Size Fix 1.0.0+26.1-fabric on 26.1.2. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0.0+26.1-fabric. It targets 26.1, 26.1.1, 26.1.2 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
It must be installed on the client. Do not install it on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.0.0+26.1-fabric. It opens that exact file at the source.
About this project
What does Stack Size Fix add?
Makes item counts for items with invalid stack sizes visible.
Useful for playing old worlds on newer versions, where you might have "overstacked" items, but since 1.20.5 you haven't been able to see their actual count when they're not in your inventory.
Also useful on any server that sends invalid item stack sizes, like some Hypixel GUIs.
For shulker boxes specifically, Tweakeroo includes a client-side fix, and Stackable Shulkers Fix contains a server-side fix. If that's all you're after, and you use one of those mods, then this mod is not needed.
| Without mod | With mod |
|---|---|
Project description from Modrinth.
Pick your setup
Stack Size Fix by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.2
2 loader builds26.1.2
2 loader builds26.1.1
2 loader builds26.1
2 loader builds1.21.11
2 loader builds1.21.10
2 loader builds1.21.9
2 loader builds1.21.8
2 loader builds1.21.7
2 loader builds1.21.6
2 loader builds1.21.5
2 loader buildsShowing the newest 12 of 19 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Stack Size Fix versions and loaders
1.0.0+26.1-fabric
stacksizefix-1.0.0+26.1-fabric.jar
1 Apr 2026
1.0.0+26.1-neoforge
stacksizefix-1.0.0+26.1-neoforge.jar
1 Apr 2026
Looking for an older file? The official Modrinth project page is in Resources.