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ChunkumulatorMinecraft mod for 1.20.1

Optimizes chunk sending for worse quality connections to the server, allowing them to start playing as soon as they join.

server onlynewest supported release 1.20.1Optimization
Latest version
1.1.1+MC1.20.1
Minecraft
1.15 to 1.20.1
Java
Java 17+
Loader
Fabric
Licence
MIT
Downloads
59.4k
Updated
19 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Chunkumulator servers

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

  • 1.20.1
  • Fabric
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.20.1Fabric17+declared12 Jun 2023
1.20Fabric17+declared2 Jun 2023
1.19.4Fabric17+declared14 Mar 2023
1.19.3Fabric17+declared7 Dec 2022
1.19.2Fabric17+declared5 Aug 2022
1.19.1Fabric17+declared27 Jul 2022
1.19Fabric17+declared7 Jun 2022
1.18.2Fabric17+declared28 Feb 2022
1.18.1Fabric17+declared10 Dec 2021
1.18Fabric17+declared30 Nov 2021
1.17.1Fabric16+declared6 Jul 2021
1.17Fabric16+declared8 Jun 2021
1.16.5Fabric8+declared14 Jan 2021
1.16.4Fabric8+declared29 Oct 2020
1.16.3Fabric8+declared10 Sept 2020
1.16.2Fabric8+declared11 Aug 2020
1.16.1Fabric8+declared24 Jun 2020
1.16Fabric8+declared23 Jun 2020
1.15.2Fabric8+declared17 Jan 2020
1.15.1Fabric8+declared16 Dec 2019
1.15Fabric8+declared9 Dec 2019

Download

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

Most recently published release

1.1.1+MC1.20.1release4 Apr 2025

chunkumulator-1.1.1+MC1.20.1.jar · 97 KB · for 1.20.1, 1.20 · Fabric

Download this release
864a48bdb967…
Older versions14
  • 1.1.1+MC1.19.44 Apr 20251.19.4, 1.19.3, 1.19.2, 1.19.1, 1.1997 KB369 downloads579ebd41db06…Get
  • 1.1.1+MC1.18.24 Apr 20251.18.2, 1.18.1, 1.1897 KB193 downloads61fc1a744ab6…Get
  • 1.1.1+MC1.17.14 Apr 20251.17.1, 1.1797 KB196 downloadse2310e399f0f…Get
  • 1.1.1+MC1.16.14 Apr 20251.16.1, 1.1697 KB11.5k downloads0e04c81b2b7b…Get
  • 1.1.1+MC1.15.24 Apr 20251.15.2, 1.15.1, 1.1597 KB192 downloads3480b31c6685…Get
  • 1.1.1+MC1.16.54 Apr 20251.16.5, 1.16.4, 1.16.3, 1.16.297 KB1.1k downloadsf2296ed4c8c0…Get
  • 1.0.3+MC1.20.13 Sept 20231.20.122 KB9.4k downloads7b889f2f9ad9…Get
  • 1.0.3+MC1.19.43 Sept 20231.19.422 KB404 downloads06f8cbd4b3a3…Get
  • 1.0.3+MC1.19.23 Sept 20231.19.222 KB1.6k downloadsabea18baad86…Get
  • 1.0.3+MC1.18.23 Sept 20231.18.222 KB387 downloads8a65c7be83f7…Get
  • 1.0.3+MC1.17.13 Sept 20231.17.122 KB600 downloads8ad775d0cca7…Get
  • 1.0.3+MC1.16.53 Sept 20231.16.522 KB15.5k downloads1820125b1ef1…Get
  • 1.0.3+MC1.16.13 Sept 20231.16.122 KB15.4k downloadsea7ad85a2fcd…Get
  • 1.0.3+MC1.15.23 Sept 20231.15.222 KB723 downloads2e0ad3dd3bbe…Get

Frequently asked

Does Chunkumulator work on Minecraft 1.20.1?

Yes. 1.20.1 is the newest Minecraft version Chunkumulator 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 Chunkumulator support?

Everything the author has declared, from 1.15 up to 1.20.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Chunkumulator on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

Which platform or loader does Chunkumulator support?

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 Chunkumulator?

Among the supported Minecraft releases above, the highest recorded requirement is Java 17 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is Chunkumulator 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 Chunkumulator?

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 Chunkumulator 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.

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Details from Modrinth, where the author last updated it on 4 Apr 2025. 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? .