PortalJS
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on CurseForgeThe author built this one for Minecraft 1.21.1 on NeoForge. On other versions it may install and then do nothing.
Welcome to PortalJS!
What is PortalJS?
To sum it up, the ability to create custom portals with Kubejs.
Will this be ported to 1.20.1?
Yes! I wanted to get some more features into the mod before backporting this mod
What does this mod do?
You can create a custom portal using KubeJS.
Here's how you can make the infamous aether portal… that sends you to the nether:
Inside your startup scripts:
PortalEvents.register(event => {
event.create()
.frameBlock("minecraft:glowstone") // required
.lightWithWater()
.setDestination("minecraft:the_nether") // required
})Remember: visit the wiki for all information!
Can I use this in my modpack?
Absolutely! Feel free to use it in your modpack.
Download stats
CurseForge:
Modrinth:
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- 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 portaljs-1.21.1-1.0.2.jar — drop this file into the mods folder
- Download size: 206 KB
- Download link checked 28 Sept 2026 — working
These come from our own check of the pack file, not from the source page.