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SpectrumJEIMinecraft mod for 1.21.1

An addon to Spectrum that adds JEI support.

client onlynewest supported 1.21.1Utility
Latest version
21.1.9+neoforge
Minecraft
1.18.2 to 1.21.1
Java
Java 21+
Loaders
Fabric, NeoForge
Licence
LGPL-3.0-only
Downloads
19.3k
Updated
4 mo ago
Available on
Modrinth
Space NodePartner

Host SpectrumJEI servers

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

  • 1.21.1
  • Fabric
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

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

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Fabric, NeoForge21+declared8 Aug 2024
1.20.1Fabric, NeoForge17+declared12 Jun 2023
1.19.2Fabric, NeoForge17+declared5 Aug 2022
1.18.2Fabric, NeoForge17+declared28 Feb 2022

Download

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

All 42 releases
21.1.9+neoforgerelease28 Mar 2026

SpectrumJEI-21.1.9+neoforge.jar · 0.1 MB · for 1.21.1

Download latest
f80a12c0cc21…
Older versions24
  • 21.1.9+fabric28 Mar 20261.21.10.1 MB910 downloads1df3af97f9ee…Get
  • 20.1.928 Mar 20261.20.10.1 MB1.2k downloads39590dda6831…Get
  • 19.2.828 Mar 20261.19.20.1 MB114 downloadsfc3dccb806bf…Get
  • 18.2.728 Mar 20261.18.20.1 MB29 downloadsd041470c366b…Get
  • 21.1.8+fabric24 Mar 20261.21.10.1 MB46 downloads241334a7e8df…Get
  • 21.1.8+neoforge24 Mar 20261.21.10.1 MB87 downloads6612ff17f433…Get
  • 20.1.824 Mar 20261.20.10.1 MB50 downloadse67cbecac05d…Get
  • 19.2.724 Mar 20261.19.20.1 MB22 downloads4739288036a9…Get
  • 18.2.624 Mar 20261.18.20.1 MB18 downloads4bf4094936ca…Get
  • 21.1.8-beta.110 Mar 20261.21.10.1 MB120 downloads76446a4b1839…Get
  • 21.1.7.110 Mar 20261.21.10.1 MB115 downloads02b35dbda52a…Get
  • 20.1.710 Mar 20261.20.10.1 MB134 downloads222d129722ce…Get
  • 19.2.610 Mar 20261.19.20.1 MB29 downloadsaa4b7fb0524e…Get
  • 21.1.8-beta.09 Mar 20261.21.10.1 MB23 downloads75cb47c2ca35…Get
  • 21.1.716 Aug 20251.21.10.1 MB8.9k downloadsc45803a29582…Get
  • 20.1.616 Aug 20251.20.10.1 MB2.4k downloads5cb88cc9529a…Get
  • 19.2.516 Aug 20251.19.20.1 MB121 downloads990b1dcd4277…Get
  • 18.2.516 Aug 20251.18.20.1 MB78 downloads48e1b2567209…Get
  • 21.1.69 Aug 20251.21.10.1 MB86 downloads5fc4e8e5100d…Get
  • 21.1.53 Aug 20251.21.10.1 MB56 downloads23261b2c9c81…Get
  • 20.1.53 Aug 20251.20.10.1 MB154 downloadsd3f326cd061f…Get
  • 19.2.43 Aug 20251.19.20.1 MB39 downloads51c0f8ab1f5c…Get
  • 18.2.43 Aug 20251.18.20.1 MB35 downloadsc9cd930ba933…Get
  • 21.1.42 Aug 20251.21.10.1 MB49 downloads86f1f65c4767…Get

Frequently asked

Does SpectrumJEI work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version SpectrumJEI 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 SpectrumJEI 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.

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

The client only. There is nothing to install on the server, so it works on any server you can already join.

Which loader does SpectrumJEI need?

Fabric, NeoForge. 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 SpectrumJEI?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.

What licence is SpectrumJEI under?

LGPL-3.0-only, 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 SpectrumJEI?

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 SpectrumJEI safely?

From the author's own page on Modrinth, 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.

Entity CullingUsing async path-tracing to hide Block-/Entities that are not visibleFerriteCoreMemory usage optimizationsImmediatelyFastSpeed up immediate mode rendering in MinecraftYetAnotherConfigLib (YACL)A builder-based configuration library for Minecraft!Xaero's MinimapDisplays a map of the nearby world terrain, players, mobs, entities in the corner of your screen. Lets you create waypoints which help you find the locations you've marked.[ETF] Entity Texture FeaturesEmissive, Random & Custom texture support for entities in resourcepacks just like Optifine but for Fabric

Last checked 6 d ago against Modrinth. 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? .