JustEnoughIDs Mod for Minecraft 1.12.2
Remove the block, item, and biome ID limits by using the 1.13 chunk format in 1.12
- downloads
- 2 downloads
- views
- 15 views
- Updated
- Updated 18.10.2026
- 1.12 — 1.12.2
Forge
About the JustEnoughIDs mod
JustEnoughIDs is a lightweight mod that removed the block, item, biome, potion, and enchantment ID limits by using the 1.13 chunk format in 1.12.
More specifically, it uses a blockstate palette when saving chunks to NBT, and uses an int biome array rather than a byte biome array. There should be very few incompatibilities with other mods, but in case you find one, please report it to the issue tracker. Unlike NotEnoughIDs, removing a mod is supported, and won't cause corruption of the worlds created with that mod.
Join our Discord server if you have any questions about the mod: https://discord.gg/f27hdrM
Extremely important: Removing JustEnoughIDs will break your world. It is equivalent to loading a 1.13 world in 1.12! JustEnoughIDs cannot load NotEnoughIDs worlds, see the FAQ for more details.
FAQ
Is it compatible with other mods?
JustEnoughIDs is incompatible with The Lost Cities for the moment until hopefully the next release.
However, due to the way the biome array works in 1.12, some mods may need custom support. For example, a biome may show up as "Mod doesn't support extended biome IDs -- Report to JEID" in the F3 screen, or a command may not work properly. Modded worldgen is supported, so there will never be biome ID shifts in your worlds. Please report any problems on the issue tracker such that it they can be fixed as soon as possible.
If I install JEID, will my old worlds still work?
Yes, they will. Chunks will be updated to 1.13 format as they are loaded.
Can I convert my NEID worlds to JEID?
No, not yet. However, using both NEID and JEID is possible. In that case, JEID's block and item limit fixes will be disabled, letting NEID handle those, and only the biome limit fix will be enabled, allowing you to maintain compatibility with previous worlds and still use as many biomes as you want.
Won't this mod corrupt my world?
No, this is NotEnoughIDs done properly. Just because NotEnoughIDs failed at implementing a safe system of extending ID limits doesn't mean that it's not possible. Mojang did it in 1.13 and this mod only backports features from the 1.13 chunk format to 1.12. Please don't claim that this is a "bad mod" only because NotEnoughIDs was.
How to install JustEnoughIDs
With Millida Launcher
Install Millida Launcher
The launcher is free: download it at millida.net/launcher and sign in with any nickname.
Click “Install” on this page
The launcher opens and installs the mod for Minecraft 1.12–1.12.2 on Forge automatically.
Launch the game
A profile with it appears in the launcher: click “Play”.
Manually
Install Forge
The loader must match the game version of the mod file, for example Minecraft 1.12.2. After installing it, a separate profile appears in your launcher.
Download the file for your version
In the version list above, pick the file JustEnoughIDs-1.0.4-SNAPSHOT-thin.jar (97 KB) for your game version.
Put it in the mods folder
The folder is inside .minecraft (Windows: %appdata%\.minecraft\mods). If it does not exist, create it.
Launch the loader profile
Open “Mods” in the main menu: JustEnoughIDs should be in the list.
Minecraft 1.12.2 runs on Java 8: with a different Java version the game may close right after launch.
Versions
With dependencies
| Minecraft | Loader | File | Date | Actions |
|---|---|---|---|---|
| 1.12.2 | Forge | JustEnoughIDs-1.0.4-SNAPSHOT-thin97.3 KB 2 | ||
| 1.12.1 | — | JustEnoughIDs 1.0.2-261016 KB | ||
| 1.12.1 | — | JustEnoughIDs 1.0.0-6969 KB |
FAQ
Which Minecraft versions does JustEnoughIDs work on?
There are files for 1.12.2, 1.12.1, 1.12. The newest is 1.12.2.
Is JustEnoughIDs for Forge or Fabric?
Only for Forge: 1.12.2. There are no files for Fabric or NeoForge: a mod for another loader will not start.
Does JustEnoughIDs need other mods?
The author lists no required dependencies: the Forge loader is enough.
Which Java does JustEnoughIDs need?
Minecraft 1.12.2 runs on Java 8. If the game closes right after launch, the usual cause is the wrong Java version in the profile settings.
Where can I download JustEnoughIDs safely?
On this page: the file JustEnoughIDs-1.0.4-SNAPSHOT-thin.jar (97 KB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: 0dbf1d19b9994d3dec2d3e0b0325dd4bb70b82aa.
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