Ultimate Compression
by VoidCallerZ
Ultimate Compression lets players pack nearly vanilla Minecraft blocks and items into dense variants that take up far less storage, and unpack them again at any time.
What it does
Compressed blocks and items follow a nine-to-one recipe: nine units become one compressed block, and crafting that block returns the originals, so no resources are lost. Its main purpose is to shrink large stockpiles in survival worlds, skyblock maps and modpacks that run short on storage.
Compressed ingots and ores are forged into gear with raised durability and special effects. The top of this chain is a separate tier, where the strongest armor set is crafted from the highest-grade compressed ore. Fabric API must be installed on Fabric, and the mod runs on client and server, so both the server and every player need it. Files are published for Fabric, Forge and NeoForge across 18 release versions, 1.18.2 – 26.3, and the code is open source under the MIT License.
Key features
Nine-to-one compression
Nine blocks or items combine into one compressed block, and the recipe can be reversed at any time.
Compressed vanilla blocks
Many common vanilla blocks and items have compact variants for dense storage.
Compressed tools and armor
Compressed ingots and ores are forged into gear with boosted durability and special effects.
Top compressed tier
The highest tier uses rare compressed ore to craft the strongest armor set in the mod.
Chest-friendly storage
Stockpiles that would fill many chests fit into far fewer slots, which eases overflowing storage rooms.
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x11 of 11 versions with builds
1.20.x1 of 1 version with builds
1.18.x1 of 1 version with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Who it’s for: Players who run out of chest space in long survival worlds, skyblock maps or storage-hungry modpacks. Server owners who want compact storage for their players can add it on both sides.
How it compares
CB: Compressed Blocks is also open source under the MIT License and runs on client and server across 1.15.2 – 1.21.11 for Fabric, Forge and NeoForge. Compressed Box covers 1.20.1 – 1.21.1 under the MIT License, also as a client and server mod. Gear & Tools Back to Ores is not open source, is also client and server, and targets 1.19.2 – 1.21.8 on the same three loaders.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Ultimate Compression | Fabric, Forge and NeoForge | 1.18.2 – 26.3 | Client and server | 2026-09-16 |
| CB: Compressed Blocks | Fabric, Forge and NeoForge | 1.15.2 – 1.21.11 | Client and server | 2026-10-14 |
| Compressed Box | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-02-07 |
| Gear & Tools Back to Ores | Fabric, Forge and NeoForge | 1.19.2 – 1.21.8 | Client and server | 2025-12-16 |
Questions
Does Ultimate Compression need Fabric API?
Does the server need the mod?
Can compressed blocks be turned back into the originals?
Which game versions have files?
In the catalog
Ultimate Compression is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 8,071 mods support Minecraft 26.3.
Similar mods
What the author says
Compress almost every vanilla block and item — 9 in, 1 out.\ Available for Fabric • NeoForge • Forge Tired of chest monsters and overflowing storage rooms? Ultimate Compression shrinks your stockpiles by letting you compress nearly all vanilla Minecraft blocks and items into dense, space-saving variants. Nine blocks…
Official listing
- Modrinth page
- modrinth.com/mod/ultimate-compression
- Owner
- VoidCallerZ
- Published
- 2022-05-24
- Updated on Modrinth
- 2026-09-16
- Facts verified
- 2026-10-15