Stackcraft
by IACTU
Stackcraft raises the item stack limit so that stacks can hold up to 1000 items, a change that players and server owners opt into through the mod.
What it does
Stackcraft changes the maximum count of each item stack, which is 99 in the base game. Most items receive a new default cap of 1000, while the mod applies its change proportionally to items that normally stack to 16 or 64, such as ender pearls. Stacks can be enlarged further through the item's max stack size data component, and the mod describes its limit as up to one billion.
Servers that run it need every player to install it too. It is released for NeoForge and published for six release versions, with files for 1.21.1, 1.21.3, 1.21.4, 1.21.5, 1.21.8 and 1.21.11. It is open source under the MIT License, and the source code and issue tracker are public.
Because the change alters a core value, it can cause compatibility issues with other mods, so the author advises making regular backups before installing it and reporting any problems through the issue tracker.
Key features
Larger item stacks
Most items stack to 1000 instead of the vanilla limit, which reduces inventory clutter for bulk materials.
Proportional scaling
Items that normally stack to 16 or 64 are scaled in proportion, so ender pearls and similar items follow the same rule.
Data component control
The maximum stack size is set through the max stack size data component, allowing caps far above the default.
Capped configuration
Stacks can be limited to 250 for players who want a smaller change than the full cap.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players and server owners who want larger item stacks on NeoForge, and who accept that other mods may not expect the new limit.
How it compares
StackUpper is open source under the GNU General Public License v3.0 only and runs on client and server, with files for 1.20.5 – 26.1.2. StackPlus is open source under the MIT License, works on Fabric and NeoForge, and needs the client but not the server, for 1.21 – 26.3. Potions Stack is also client and server and MIT licensed, but it changes only potion stacks, for 1.21 – 26.3.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Stackcraft | NeoForge | 1.21.1 – 1.21.11 | Client and server | 2025-12-19 |
| StackUpper | NeoForge | 1.20.5 – 26.1.2 | Client and server | 2026-04-16 |
| StackPlus | Fabric and NeoForge | 1.21 – 26.3 | Client required, server optional | 2026-09-17 |
| Potions Stack | NeoForge | 1.21 – 26.3 | Client and server | 2026-09-27 |
Questions
Does Stackcraft have to be installed on the server?
Which game versions does Stackcraft support?
Why does the author recommend backups?
In the catalog
Stackcraft is one of 4,058 Storage mods on ModsFinder, and one of 1,794 Storage mods for NeoForge. 19,862 mods support Minecraft 1.21.11.
More from IACTU
Similar mods
What the author says
Currently, there is a limit to the maximum count an itemstack can have in the game (99). This mod greatly increases that cap by changing the limit built into the max_stack_size data component to ~1 billion. Additionally, the default maximum stack size of most items is adjusted for a new 1000 item cap. This is also…
Official listing
- Modrinth page
- modrinth.com/mod/stackcraft
- Owner
- IACTU
- Published
- 2024-11-23
- Updated on Modrinth
- 2025-12-19
- Facts verified
- 2026-10-15