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Leaky - Item Lag FixMinecraft mod for 1.21.1

Detects broken farms and item leaks, reduces dropped item lag, and safely cleans up dangerous item concentrations

newest supported 1.21.1Server UtilityMap Information
Latest version
leaky-1.21-2.4.jar
Minecraft
1.18.2 to 1.21.1
Java
Java 21+
Loaders
NeoForge, Fabric, Forge
Licence
not stated
Downloads
10.9M
Updated
2 d ago
Available on
CurseForge

Minecraft versions

Every version Leaky - Item Lag Fix declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1NeoForge, Fabric, Forge21+declared8 Aug 2024
1.21NeoForge, Fabric, Forge21+declared13 Jun 2024
1.20.1NeoForge, Fabric, Forge17+declared12 Jun 2023
1.20NeoForge, Fabric, Forge17+declared2 Jun 2023
1.19.4NeoForge, Fabric, Forge17+declared14 Mar 2023
1.19.3NeoForge, Fabric, Forge17+declared7 Dec 2022
1.19.2NeoForge, Fabric, Forge17+declared5 Aug 2022
1.18.2NeoForge, Fabric, Forge17+declared28 Feb 2022

Download

From Leaky - Item Lag Fix’s own host. Nothing is re-hosted here.

All 39 releases
leaky-1.21-2.4.jarrelease29 Dec 2025

leaky-1.21-2.4.jar · 0.0 MB · for 1.21.1

Download latest
71b410b8c956…
Older versions24
  • leaky-fabric-1.21-2.4.jar29 Dec 20251.21.10.0 MBb2361a1b79b6…Get
  • leaky-1.21-2.3.jar23 Dec 20251.21, 1.21.10.0 MB391 downloads306f10fa2a1f…Get
  • leaky-1.20.1-2.3.jar22 Dec 20251.20.10.0 MB1.6k downloads4a55b296f4a2…Get
  • leaky-fabric-1.21-2.3.jar22 Dec 20251.21.10.0 MB451e12d90b48…Get
  • leaky-fabric-1.20.1-2.3.jar22 Dec 20251.20.10.0 MBfc6d9455dfb4…Get
  • leaky-fabric-1.21-2.1.jar28 Jul 20241.21, 1.21.10.0 MB160.3k downloadsff1eeefc05ac…Get
  • leaky-1.21-2.1.jar28 Jul 20241.21, 1.21.10.0 MB192.6k downloads9afe81ea55a6…Get
  • leaky-fabric-1.20.1-2.1.jar13 May 20241.20.10.0 MB171.2k downloads5de4ca1e51d7…Get
  • leaky-1.20.1-2.1.jar13 May 20241.20.10.0 MB2.0M downloads0a206404d460…Get
  • leaky-fabric-1.20.1-2.0.jar26 Apr 20241.20.10.0 MB38.8k downloads3f0b99e93f79…Get
  • leaky-1.20.1-2.0.jar25 Apr 20241.20.10.0 MB26.2k downloads450eccc57849…Get
  • leaky-1.20.1-1.7.jar23 Sept 20231.20, 1.20.10.0 MB1.3M downloads8a185ead0ab1…Get
  • leaky-fabric-1.20.1-1.6.jar10 Aug 20231.20, 1.20.10.0 MB306.2k downloads8d9f679c1069…Get
  • leaky-1.20.1-1.6.jar10 Aug 20231.20, 1.20.10.0 MB23.7k downloadscb3d0894aa72…Get
  • leaky-1.20.1-1.5.jar1 Jul 20231.20, 1.20.10.0 MB26.0k downloads0a47211348c6…Get
  • leaky-1.20.1-1.4.jar20 Jun 20231.20, 1.20.10.0 MB4.2k downloads9c163e8f9419…Get
  • leaky-1.20.1-1.3.jar19 Jun 20231.20, 1.20.10.0 MB121 downloadsf1a49092944b…Get
  • leaky-fabric-1.20.1-1.4.jar19 Jun 20231.20, 1.20.10.0 MB587 downloads7ba563c5647c…Get
  • leaky-fabric-1.19.4-1.4.jar9 Jun 20231.19.40.0 MB2.5k downloadsa1eaa6e210a0…Get
  • leaky-fabric-1.19.3-1.4.jar9 Jun 20231.19.30.0 MB178 downloads3715c5fc7949…Get
  • leaky-fabric-1.19.2-1.4.jar9 Jun 20231.19.20.0 MB5.1k downloadsf0b69b389804…Get
  • leaky-fabric-1.18.2-1.4.jar9 Jun 20231.18.20.0 MB798 downloadsa08d7d23fbfa…Get
  • leaky-1.19.4-1.3.jar8 Jun 20231.19.40.0 MB2.8k downloads2d8aa4b381a7…Get
  • leaky-1.19.3-1.3.jar8 Jun 20231.19.30.0 MB312 downloads8c5f4fa0256e…Get

Frequently asked

Does Leaky - Item Lag Fix work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Leaky - Item Lag Fix 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 Leaky - Item Lag Fix support?

Everything the author has declared, from 1.18.2 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does Leaky - Item Lag Fix support?

NeoForge, Fabric, Forge. 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 Leaky - Item Lag Fix?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

How do I install Leaky - Item Lag Fix?

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 Leaky - Item Lag Fix safely?

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

Works on the same versions

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

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.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)

Last checked 2 d ago against CurseForge. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .