MCEF2

A library for embedding Chromium into the Minecraft.

443 Downloads

fabricneoforgelibraryutility

Rent Server with this Mod

Screenshots

About this Mod

The Mcef2

This mod is a library that embeds JCEF browser into the Minecraft.

Current Chromium version: 141.0.7390.123.

Features

Automatically download JCef through fast mirror servers.
Pressing F10 can open a in-game web broswer.
Just provide APIs for other mods.

Platforms

Windows x86 x64 arm64
Linux x86 x64 arm64 arm
macosx x64 arm64 (Not tested)

Some antivirus software may prevent JCEF from initializing. You may have to disable your antivirus or whitelist the mod files for MCEF2 to work properly.

This mod can NOT run on Android.

Available Versions

MCEF2 1.0.1release

MC 1.21.1fabric

December 19, 2025

MCEF2 1.0.1release

MC 1.21.1neoforge

December 19, 2025

How to Install MCEF2 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 "MCEF2". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricneoforge

Minecraft Versions

1.21.1

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

MCEF2 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 MCEF2 compatible with fabric and neoforge?

MCEF2 officially supports fabric, neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with MCEF2 – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if MCEF2 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.