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Long NBT KillerMinecraft mod for 1.21.8

Prevent minecraft from crashing while encountering deep nbt tags

newest supported 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
18.1M
Updated
12 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.

LongNBTKiller-NeoForge-1.21.8-1.0.0.jarrelease28 Sept 2025

LongNBTKiller-NeoForge-1.21.8-1.0.0.jar · 0.0 MB · for 1.21.8

Download latest
42f6036a4d23…
Older versions11
  • LongNbtKiller-Fabric-1.21.8-1.0.0.jar28 Sept 20251.21.80.0 MB3 downloads623425bab624…Get
  • LongNBTKiller-Forge-1.21.3-1.0.0.jar9 Nov 20241.21.30.0 MB480 downloadse5db2ea6c26d…Get
  • LongNBTKiller-NeoForge-1.21.3-1.0.0.jar9 Nov 20241.21.1, 1.21.2, 1.21.30.0 MB1.1M downloadsda4c8a395b86…Get
  • LongNbtKiller-Forge-1.20.2-1.0.0.jar4 Jan 20241.20.20.0 MB184 downloadseda254c7c55d…Get
  • LongNbtKiller-Forge-1.20.4-1.0.0.jar14 Dec 20231.20.40.0 MB267 downloads26cc9753ff2c…Get
  • LongNbtKiller-Fabric-1.20.4-1.0.0.jar14 Dec 20231.20.40.0 MB288 downloadsaf406ffff54b…Get
  • LongNbtKiller-Forge-1.20.1-1.0.0.jar14 Dec 20231.20, 1.20.10.0 MB3.1M downloadsf185e91d40a1…Get
  • LongNbtKiller-Fabric-1.20.1-1.0.0.jar14 Dec 20231.20, 1.20.10.0 MB3.6k downloads886eeca34e46…Get
  • LongNbtKiller-Forge-1.19.2-1.0.0.jar14 Dec 20231.19.20.0 MB412.4k downloads460bbb77bf6e…Get
  • LongNbtKiller-Forge-1.18.2-1.0.0.jar14 Dec 20231.18.20.0 MB69.9k downloadsb4cab377d556…Get
  • LongNbtKiller-Forge-1.16.5-1.0.0.jar14 Dec 20231.16.50.0 MB11.9k 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 loader does Long NBT Killer need?

NeoForge, Fabric, Forge. A build for one loader will not 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?

On the newest Minecraft release 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 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?

From the author's own page on CurseForge, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

Works on the same versions

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

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Last checked 1 mo 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? .