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Ultimate CompressionMinecraft mod for 26.3

Getting tired of the constant chest monsters and overflowing storage systems? Ultimate Compression is a mod created to reduce storage requirements by compressing almost all vanilla Minecraft blocks & items! The mod also includes custom tools and armor created with the compressed variants of ingots and their respective ores, with increased durability and effects.

client and servernewest supported release 26.3EquipmentStorageWorldgen
Latest version
26.2-3.4.0_neoforge
Minecraft
1.18.2 to 26.3
Java
Java 25+
Loaders
NeoForge, Forge, Fabric
Licence
MIT
Downloads
2.9k
Updated
26 d ago
Available on
Modrinth
Space NodeOur hosting

Host Ultimate Compression servers

One click and Ultimate Compression is installed with the right loader, on hardware built for it.

  • 26.3
  • NeoForge
  • Forge
  • Fabric
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version Ultimate Compression declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
26.3NeoForge, Forge, Fabric25+declared15 Sept 2026
26.2Fabric, NeoForge, Forge25+declared16 Jun 2026
26.1.2Forge, NeoForge, Fabric25+declared9 Apr 2026
26.1.1Forge, NeoForge, Fabric25+declared1 Apr 2026
26.1Forge, NeoForge, Fabric25+declared24 Mar 2026
1.21.11Forge, NeoForge, Fabric21+declared9 Dec 2025
1.21.10Forge, NeoForge, Fabric21+declared7 Oct 2025
1.21.9Forge, NeoForge, Fabric21+declared30 Sept 2025
1.21.8Fabric, Forge, NeoForge21+declared17 Jul 2025
1.21.7NeoForge, Forge, Fabric21+declared30 Jun 2025
1.21.6Fabric, NeoForge, Forge21+declared17 Jun 2025
1.21.5Forge, NeoForge, Fabric21+declared25 Mar 2025
1.21.4Forge, NeoForge, Fabric21+declared3 Dec 2024
1.21.3NeoForge, Forge, Fabric21+declared23 Oct 2024
1.21.2NeoForge, Forge, Fabric21+declared22 Oct 2024
1.21.1Fabric, NeoForge, Forge21+declared8 Aug 2024
1.20.1Forge, NeoForge, Fabric17+declared12 Jun 2023
1.18.2Forge, Fabric, NeoForge17+declared28 Feb 2022

Download

From Ultimate Compression’s own host. Nothing is re-hosted here.

Browse 51 indexed releases

For Minecraft 26.3

Choose the loader you use before downloading.

No matching file appears among the releases shown here. Browse all releases.

Most recently published release

26.2-3.4.0_neoforgerelease20 Jun 2026

ultimatecompression-26.2-3.4.0_neoforge.jar · 0.9 MB · for 26.2 · NeoForge

Download this release
d035eea1d793…
Older versions24
  • 26.2-3.4.0_fabric20 Jun 202626.21.0 MB154 downloads72128b1355c0…Get
  • 26.1-3.3.0_fabric14 Jun 202626.1.2, 26.1.1, 26.11.0 MB96 downloads6da11aecc324…Get
  • 26.1-3.3.0_neoforge14 Jun 202626.1.2, 26.1.1, 26.10.9 MB25 downloads05935852f426…Get
  • 1.21.11-3.3.0_neoforge12 Jun 20261.21.110.9 MB10 downloads4bcc26e2ca49…Get
  • 1.21.10-3.3.0_neoforge12 Jun 20261.21.100.9 MB6 downloads6719935c198b…Get
  • 1.21.9-3.3.0_neoforge12 Jun 20261.21.90.9 MB2 downloadsa31f4d56e8a7…Get
  • 1.21.11-3.3.0_fabric12 Jun 20261.21.110.9 MB47 downloads088d8b03a354…Get
  • 1.21.10-3.3.0_fabric12 Jun 20261.21.100.9 MB10 downloadsbcd4a86ae0cc…Get
  • 1.21.9-3.3.0_fabric12 Jun 20261.21.90.9 MB2 downloadsa4902e52bf4b…Get
  • 1.21.11-3.2.0_fabric27 May 20261.21.110.9 MB21 downloads7dc2084108a0…Get
  • 1.21.10-3.2.0_fabric27 May 20261.21.100.9 MB7 downloads14443cdc20f2…Get
  • 1.21.9-3.2.0_fabric27 May 20261.21.90.9 MB3 downloadsaccaa13d2899…Get
  • 1.21.8-3.2.0_fabric27 May 20261.21.80.9 MB4 downloadsd018b220141e…Get
  • 1.21.7-3.2.0_fabric27 May 20261.21.70.9 MB1 download85a50f85b04b…Get
  • 1.21.6-3.2.0_fabric27 May 20261.21.60.9 MB3 downloadsaac9465f6924…Get
  • 1.21.5-3.2.0_fabric27 May 20261.21.50.9 MB6 downloadsb43d2e2fd85a…Get
  • 1.21.4-3.2.0_fabric27 May 20261.21.40.9 MB6 downloads6334c8ef1d46…Get
  • 1.21.11-3.2.0_neoforge27 May 20261.21.110.9 MB5 downloadsd79a0d56a880…Get
  • 1.21.10-3.2.0_neoforge27 May 20261.21.100.9 MB1 download23a787c3adc2…Get
  • 1.21.9-3.2.0_neoforge27 May 20261.21.90.9 MB3 downloadsa26654c75ef6…Get
  • 1.21.8-3.2.0_neoforge27 May 20261.21.80.9 MB5 downloads7c260dbaa2b0…Get
  • 1.21.7-3.2.0_neoforge27 May 20261.21.70.9 MB2 downloadsd4e40b9a05ae…Get
  • 1.21.6-3.2.0_neoforge27 May 20261.21.60.9 MB2 downloadsc1e539501dad…Get
  • 1.21.5-3.2.0_neoforge27 May 20261.21.50.9 MB3 downloads2e21e68639a1…Get

Frequently asked

Does Ultimate Compression work on Minecraft 26.3?

Yes. 26.3 is the newest Minecraft version Ultimate Compression declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Ultimate Compression support?

Everything the author has declared, from 1.18.2 up to 26.3. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Ultimate Compression on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does Ultimate Compression support?

NeoForge, Forge, Fabric. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Ultimate Compression?

Among the supported Minecraft releases above, the highest recorded requirement is Java 25 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is Ultimate Compression under?

MIT, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Ultimate Compression?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Ultimate Compression safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

Armor HiderHide or adjust the transparency of armor, glint, and offhand items - with full multiplayer sync. No dependencies required.BookshelfAn open source library for other mods!GeckoLibA 3D animation library for entities, blocks, items, armor, and more!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.

Details from Modrinth, where the author last updated it on 16 Sept 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .