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Java Mods

Just Enough Resources (JER)

Just Enough Resources (JER) is a client-side add-on for Just Enough Items that adds mob drop, world generation, dungeon loot, and villager trade lookups to JEI's item panel.

By way2muchnoise via Modrinth.

JEI item panel showing the JER mob drops tab listing a parrot as a drop source
Section
Java Mods
Platform
Java
Checked
Updated
Versions
1.18.2, 1.19.4, 1.20.1, 1.20.6, 1.21.1, 1.21.8, 1.21.11, 26.1.2, 26.2
1/2
JEI item panel showing the JER mob drops tab listing a parrot as a drop source

What Just Enough Resources (JER) works with.

PlatformJava Edition
LoadersFabric, Forge, NeoForge
Minecraft versions1.18.2, 1.19.4, 1.20.1, 1.20.6, 1.21.1, 1.21.8, 1.21.11, 26.1.2, 26.2
EnvironmentClient

Just Enough Resources (JER) is a client-side add-on mod for Just Enough Items (JEI) on Minecraft Java Edition. JEI is the recipe and item browser that most modded players already run; JER layers extra lookup tabs onto that same item panel, most notably showing which mobs drop the item you're looking at, alongside world generation sources, dungeon chest odds, and villager trades. It runs on Fabric, Forge, and NeoForge, and it has no interface of its own outside of JEI.

What JER adds to the JEI item panel

  • Mob drops: which mobs drop the selected item, plus drop chance and experience where the source tracks it
  • Plant and seed drops: which crops or plants produce the item
  • World generation: ores, structures, and biome sources for the item
  • Dungeon chest loot: which loot tables and chest types can contain the item, with odds
  • Villager trades: which villager professions and levels buy or sell the item
  • Enchantment information for enchanted books and gear

Installing JER alongside Just Enough Items

JER's Modrinth page does not list a required dependency, but the mod is built entirely as an add-on to Just Enough Items: every tab it adds shows up inside JEI's own item panel, so JER has nothing to display without JEI installed on the same loader and Minecraft version.

  1. 1.Download Just Enough Items for your loader and Minecraft version
  2. 2.Download the matching JER build for the same loader and version
  3. 3.Drop both jar files into your mods folder and launch the game

Loader and version support

Fabric and NeoForge track current releases closely: both reached Minecraft 26.2 with build 1.11.0.43, published 2026-08-03. Forge lags well behind, with its last published build (1.6.0.17, from 2025-05-07) topping out at Minecraft 1.21.1. A Forge modpack built on anything newer than 1.21.1 will not have a matching JER build.

Just Enough Resources (JER) mod showcase

Questions about Just Enough Resources (JER).

5 questions

What does Just Enough Resources (JER) do?

JER is a client-side add-on to Just Enough Items that adds extra tabs to the item panel: mob drops, plant and seed drops, villager trades, dungeon chest loot, ore and structure world generation, and enchantment information for whichever item you're looking up.

Does JER need Just Enough Items (JEI) installed?

Yes. JER's Modrinth listing doesn't declare a formal dependency, but the mod has no interface of its own. Every tab it adds appears inside JEI's item panel, so JER shows nothing unless JEI is installed for the same loader and Minecraft version.

Which loaders does Just Enough Resources support?

Fabric, Forge, and NeoForge. Fabric and NeoForge have the most current builds, reaching Minecraft 26.2 as of August 2026, while Forge's last published build only reaches Minecraft 1.21.1, so Forge packs on newer versions will not find a matching JER build.

Why are the mob drops or world gen tabs empty in JER?

JER builds those tabs by scanning the loaded world, which does not always sync correctly over a network connection. Players on dedicated or multiplayer servers, including some modpacks, have reported empty mob drop and world gen tabs even for vanilla items, while singleplayer works. Loading a singleplayer world once before connecting to the server is a commonly reported workaround.

Can I run JER on a Minecraft server?

JER is listed as client-side only on Modrinth, with server-side support marked unsupported. It works as a local add-on to your JEI installation rather than as server software, so there's no server-side build to install.

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