Portalium
Java mod listed for Minecraft 1.16–1.21. Downloads from the MC Java Mods app on Android.
I don't know my version or loader

Portalium is a performance mod that helps modpacks specifically by unloading dimensions no one is in. It works by monitoring which dimensions have players in them and unloads those that don't. When the last player leaves a dimension a short timer starts counting down before the dimension is now dormant, meaning its chunks are unloaded from memory and it's removed from the server's tick loop, saving CPU and RAM and even giving more TPS. This mod is compatible with most other mods like Mekanism, Ice and Fire, Lycanites Mobs, etc. and custom dimensions for your convenience.
If you come across any errors, PLEASE leave a brief comment explaining the error to help me update it and help out other users, thank you!
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.11, 1.19.2, 1.16.5
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as portalium-1.1.0-1.19.2.jar — drop this file into the mods folder
- Download size: 15 KB
- Download link checked 3 Oct 2026 — working
These come from our own check of the pack file, not from the source page.