PortalJS

Ability to create custom portals with KubeJS

2.3K Downloads

neoforgegame-mechanics

Rent Server with this Mod

About this Mod

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: CurseForge Downloads
Modrinth: Modrinth Downloads

Available Versions

PortalJS 1.21.1-1.1.0release

MC 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4neoforge

March 5, 2025

PortalJS 1.21.1-1.0.3release

MC 1.21.1neoforge

February 27, 2025

How to Install PortalJS on Your Server

Order Server

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

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.4).

Install Mod

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

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.4, 1.21.3, 1.21.2 (+2 more)

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

PortalJS server crashes on startup – what to do?

Most common cause: wrong neoforge 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 (1.21.4). You can switch loaders with one click in the panel.

Is PortalJS compatible with neoforge?

PortalJS officially supports neoforge for Minecraft 1.21.4, 1.21.3, 1.21.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with PortalJS – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if PortalJS 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.