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Long NBT KillerMinecraft mod for 1.21.8

Prevent minecraft from crashing while encountering deep nbt tags

newest supported release 1.21.8Utility Qol
Latest version
LongNBTKiller-NeoForge-1.21.8-1.0.0.jar
Minecraft
1.16.5 to 1.21.8
Java
Java 21+
Loaders
NeoForge, Fabric, Forge
Licence
not stated
Downloads
20.5M
Updated
13 mo ago
Available on
CurseForge

Minecraft versions

Every version Long NBT Killer declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.8NeoForge, Fabric, Forge21+declared17 Jul 2025
1.21.3NeoForge, Fabric, Forge21+declared23 Oct 2024
1.21.2Forge, NeoForge, Fabric21+declared22 Oct 2024
1.21.1NeoForge, Fabric, Forge21+declared8 Aug 2024
1.20.4Fabric, NeoForge, Forge17+declared7 Dec 2023
1.20.2Fabric, NeoForge, Forge17+declared20 Sept 2023
1.20.1NeoForge, Fabric, Forge17+declared12 Jun 2023
1.20NeoForge, Fabric, Forge17+declared2 Jun 2023
1.19.2NeoForge, Fabric, Forge17+declared5 Aug 2022
1.18.2NeoForge, Fabric, Forge17+declared28 Feb 2022
1.16.5NeoForge, Fabric, Forge8+declared14 Jan 2021

Download

From Long NBT Killer’s own host. Nothing is re-hosted here.

For Minecraft 1.21.8

Choose the loader you use before downloading.

  • NeoForge

    LongNBTKiller-NeoForge-1.21.8-1.0.0.jar · 28 Sept 2025 · LongNBTKiller-NeoForge-1.21.8-1.0.0.jar

    Get NeoForge

  • Fabric

    LongNbtKiller-Fabric-1.21.8-1.0.0.jar · 28 Sept 2025 · LongNbtKiller-Fabric-1.21.8-1.0.0.jar

    Get Fabric

Most recently published release

LongNBTKiller-NeoForge-1.21.8-1.0.0.jarrelease28 Sept 2025

LongNBTKiller-NeoForge-1.21.8-1.0.0.jar · 4 KB · for 1.21.8 · NeoForge

Download this release
42f6036a4d23…
Older versions11
  • LongNbtKiller-Fabric-1.21.8-1.0.0.jar28 Sept 20251.21.84 KB3 downloads623425bab624…Get
  • LongNBTKiller-Forge-1.21.3-1.0.0.jar9 Nov 20241.21.35 KB480 downloadse5db2ea6c26d…Get
  • LongNBTKiller-NeoForge-1.21.3-1.0.0.jar9 Nov 20241.21.3, 1.21.2, 1.21.16 KB1.1M downloadsda4c8a395b86…Get
  • LongNbtKiller-Forge-1.20.2-1.0.0.jar4 Jan 20241.20.26 KB184 downloadseda254c7c55d…Get
  • LongNbtKiller-Forge-1.20.4-1.0.0.jar14 Dec 20231.20.46 KB267 downloads26cc9753ff2c…Get
  • LongNbtKiller-Fabric-1.20.4-1.0.0.jar14 Dec 20231.20.44 KB288 downloadsaf406ffff54b…Get
  • LongNbtKiller-Forge-1.20.1-1.0.0.jar14 Dec 20231.20.1, 1.2015 KB3.1M downloadsf185e91d40a1…Get
  • LongNbtKiller-Fabric-1.20.1-1.0.0.jar14 Dec 20231.20.1, 1.2012 KB3.6k downloads886eeca34e46…Get
  • LongNbtKiller-Forge-1.19.2-1.0.0.jar14 Dec 20231.19.215 KB412.4k downloads460bbb77bf6e…Get
  • LongNbtKiller-Forge-1.18.2-1.0.0.jar14 Dec 20231.18.215 KB69.9k downloadsb4cab377d556…Get
  • LongNbtKiller-Forge-1.16.5-1.0.0.jar14 Dec 20231.16.513 KB11.9k downloads8de5e8b7cbe0…Get

Frequently asked

Does Long NBT Killer work on Minecraft 1.21.8?

Yes. 1.21.8 is the newest Minecraft version Long NBT Killer 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 Long NBT Killer support?

Everything the author has declared, from 1.16.5 up to 1.21.8. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does Long NBT Killer 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 Long NBT Killer?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

How do I install Long NBT Killer?

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 Long NBT Killer 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. 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 CurseForge, where the author last updated it on 28 Sept 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? .