SpectrumJEI

An addon to Spectrum that adds JEI support.

16.5K Downloads

fabricneoforgeutility

Rent Server with this Mod

About this Mod

SpectrumJEI is an addon to Spectrum that adds support for viewing recipes in Just Enough Items.

In addition to all REI/EMI features that Spectrum provides, this mod also adds:
• Separate categories for different Pedestal tiers
• Pedestal recipe transfer for Crafting Tablets (1.19.2+)
• Includes FractalJEI which fixes items not showing up in JEI (1.20.1+)

For EMI support, please directly use the base mod.

This mod supports being loaded with Sinytra Connector, requiring Connector Extras.

Available Versions

21.1.9+neoforgerelease

MC 1.21.1neoforge

March 28, 2026

21.1.9+fabricrelease

MC 1.21.1fabric

March 28, 2026

20.1.9release

MC 1.20.1fabric

March 28, 2026

19.2.8release

MC 1.19.2fabric

March 28, 2026

18.2.7release

MC 1.18.2fabric

March 28, 2026

How to Install SpectrumJEI on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).

Install Mod

Open the mod browser in the dashboard and search for "SpectrumJEI". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricneoforge

Minecraft Versions

1.21.1, 1.20.1, 1.19.2 (+1 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

SpectrumJEI server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is SpectrumJEI compatible with fabric and neoforge?

SpectrumJEI officially supports fabric, neoforge for Minecraft 1.21.1, 1.20.1, 1.19.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with SpectrumJEI – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if SpectrumJEI consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.