MCEF2
by fhyjs
MCEF2 is a library that embeds a Chromium browser engine in Minecraft so that other mods can display web pages inside the game.
What it does
A library that embeds Chromium in Minecraft, with JCEF used to run the browser. The library fetches JCEF automatically through fast mirror servers when it starts, and pressing F10 in-game opens a web browser. Other mods can call the APIs it provides to build their own browser screens.
Builds exist for Windows on x86, x64 and arm64, for Linux on x86, x64, arm64 and arm, and for macOS on x64 and arm64, with macOS listed as tested. The mod is published for Fabric and NeoForge for 1.21.1 only, and the latest files are 1.0.1, dated 2025-12-19. Only the client needs it, while the server may run it too; the server does not require it. It is released under the MIT License and is open source.
Key features
Embedded Chromium browser
A Chromium browser runs inside the game window, with the engine version reported by the mod's current build.
Automatic JCEF setup
JCEF is fetched automatically through fast mirror servers, so players do not have to install it by hand.
In-game browser on F10
Pressing F10 opens the browser during play, and other mods can use the same browser through the mod's APIs.
Antivirus compatibility note
Some antivirus software prevents JCEF from starting, and the mod's files must be added to the antivirus whitelist for it to work.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Mod developers
Mods that need an embedded web view can rely on the APIs MCEF2 provides instead of bundling their own browser.
In-game guides and pages
Players can open web pages during a session, such as documentation or wikis, without leaving the game.
Who it’s for: Mod developers who want an embedded browser for their own screens, and players who want a web browser in the game client.
How it compares
MCEF is a related Chromium embedding library that is client-side only, runs on Fabric, Forge and NeoForge, targets 1.20.1 – 1.21.4 and is open source under the GNU Lesser General Public License v2.1 only. MCEF Modern is a Fabric library for 1.21.10 – 26.3 under the same license. Graphene is a Fabric client-side mod for 1.21.11 – 26.2 released under the MIT License and open source. Unlike these, MCEF2 is published for 1.21.1 only and targets Fabric and NeoForge.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| MCEF2 | Fabric and NeoForge | 1.21.1 | Client required, server optional | 2025-12-19 |
| MCEF (Minecraft Chromium Embedded Framework) | Fabric, Forge and NeoForge | 1.20.1 – 1.21.4 | Client-side only | 2025-01-16 |
| MCEF Modern | Fabric | 1.21.10 – 26.3 | Client-side only | 2026-09-24 |
| Graphene | Fabric | 1.21.11 – 26.2 | Client-side only | 2026-08-30 |
Questions
Which loaders does MCEF2 support?
Does the server need MCEF2 installed?
Why might the browser fail to start?
In the catalog
MCEF2 is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from fhyjs
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What the author says
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…
Official listing
- Modrinth page
- modrinth.com/mod/mcef2
- Owner
- fhyjs
- Published
- 2025-12-19
- Updated on Modrinth
- 2025-12-19
- Facts verified
- 2026-10-15