Do I need Fabric API or just Fabric Loader?

You need Fabric Loader installed to run any Fabric mod. Fabric API is separate and only required by mods that list it as a dependency. Check the mod's page before assuming you need it, but when in doubt, having it in your mods folder never hurts.

Can I use Fabric and Forge mods at the same time?

No. Fabric and Forge are completely separate mod loaders and they do not work together in the same instance. You would need two different Minecraft profiles, one for each loader. Most mods are written for one or the other, not both.

My Fabric mod is not showing up in game. What's wrong?

Check three things: the mod .jar is actually in the mods folder, the mod version matches your Minecraft version, and you launched using the Fabric profile instead of the default vanilla one. Any of those being off will cause the mod to silently not load.

Does Fabric work on Minecraft Bedrock Edition?

No. Fabric is Java Edition only. Bedrock uses a completely different system called add-ons and Fabric does not touch it.

How do I update Fabric when a new Minecraft version comes out?

Run the installer again, select the new Minecraft version, and install. It creates a new profile and leaves your old ones alone. You will also need to update each of your mods individually since old mod versions almost never work on newer game versions.

Fabric Loader for Minecraft - Download & Install

Download Fabric Loader for Minecraft from the official page

What Is Fabric Loader?

Fabric Loader is a mod loader for Minecraft Java Edition. It sits between the game and your mods, giving them a stable way to hook into the game code without Mojang’s updates breaking everything every few months.

If you’ve downloaded a mod and gotten a crash or a blank screen, the loader is almost certainly what’s missing. Mods like Sodium, Lithium, Iris, and thousands of others on Modrinth require Fabric before they’ll do anything at all.

It’s fast to install, doesn’t touch your existing vanilla profiles, and has been actively maintained since 2019. For newer Minecraft versions, it’s often the first mod loader to get updated after a release.

Fabric Loader vs. Fabric API

This is the single biggest source of confusion for players new to Fabric, so worth clearing up.

Fabric Loader is the installer tool and core runtime. You install it once using the installer and it creates a launcher profile. That’s what this page is about.
Fabric API is a separate .jar file that goes in your mods folder. It’s basically a library of extra hooks that many mods depend on. Without it, those mods will either refuse to load or crash immediately.

You download Fabric API the same way you’d download any mod, from Modrinth or CurseForge. Always grab the version that matches your Minecraft version. It is not included in the loader installer.

Supported Minecraft Versions

Fabric covers most Minecraft Java Edition versions from 1.14 onward, plus many snapshots and release candidates. If you’re running 1.16, 1.18, 1.20, 1.21, or anything recent, you’re good. Very old versions like 1.8 or 1.12 are not supported, full stop. The installer lists every available version in a dropdown when you run it, so there’s no guessing.

Fabric is also typically one of the fastest mod loaders to support new Minecraft releases, often within days of a major update dropping.

How to Install Fabric Loader

The official installer is at fabricmc.net/use/installer/. The download button on this page will take you there. The whole process takes about two minutes.

Close Minecraft and the launcher before you start. The installer needs them shut down to work correctly.
Download the installer using the button on this page.
Run the installer. On Windows, double-click the .jar file. On Mac or Linux, right-click and open with Java, or run java -jar fabric-installer.jar in a terminal. If nothing happens on Windows, you may need to install Java first.
Pick your Minecraft version from the dropdown. Leave the Loader Version on the latest unless you have a specific reason to use an older one.
Make sure “Create Profile” is checked. This tells the installer to add a new entry to your Minecraft launcher automatically.
Click Install. The installer pulls down the necessary files and sets up the profile. It takes a few seconds.
Open the Minecraft launcher and look for a profile called something like “fabric-loader-1.21.1” in the profile dropdown at the bottom left. Select it.
Click Play. The game will launch with Fabric. The title screen will show the Fabric version in the corner if it worked.

Adding Mods After Installing

Drop your mod .jar files into the .minecraft/mods folder. If that folder doesn’t exist yet, create it manually. Every mod in that folder needs to match the Minecraft version you’re running. If a mod page says it requires Fabric API, download that too and add it to the same mods folder.

For a detailed walkthrough of finding and installing mods, see our guide on how to download and install the Fabric Loader.

Troubleshooting

The most common crash after setup is a missing Fabric API .jar when a mod needs it. Check the mod description for listed dependencies and make sure every file is there.

If you’re mixing mods from different Minecraft versions in the same mods folder, that will crash too. A 1.20 mod will not work in a 1.21 instance, ever. Clean out the folder and make sure everything matches.

If the installer won’t open at all, you need Java installed on your system. Get it from java.com, then try running the installer again.

If you want to compare Fabric to other loaders, check out our pages on Minecraft Forge, NeoForge, and Quilt. Quilt in particular is worth knowing about if you want Fabric mod compatibility with a few extra features on top.

Fabric Loader for Minecraft – Download & Install