To be able to run the current version of the Fabric Installer you need a properly configured version of Java installed in your computer.
To install/verify Java check this tutorial: Install/Verify Java (Windows) There are other similar tutorials for MacOS and Linux, see the left sidebar for links.
Go to https://fabricmc.net/use/ and download the Universal JAR installer or the Windows exe installer.
Close the Minecraft Launcher! The launcher should not be running when you run the Fabric Installer.
Run the installer:
Client tab. Select the
Minecraft Version and the
Loader Version. Usually there is no need to change the loader version, the latest one will work in any Minecraft version.
Select Install Location should point to the Minecraft Launcher data folder.
If you want to create a new profile leave
Create Profile checked.
Close the “Succesfully installed” dialog box.
Close the Fabric Installer.
DO NOT RUN YOUR NEWLY CREATED FABRIC INSTALLATION YET!
This step is optional. If you don't change the GAME DIRECTORY the Fabric Installation will share its saved worlds with all the other Installations that have the game directory set to default. It will also share the mods and config folder with other modded Installations you may have that have the game directory set to default, potentially making everything an absolute mess.
You may set the GAME DIRECTORY to any folder you want, but it may be a good idea to use a folder inside your user profile for example:
Where userprofile is the path of the actual location of your userprofile, usually C:\Users\yourusername
Where yourusername is your actual user name, not the text yourusername, for example James or Anna or MadMax.
You will have to manually create this folder to use as “Game Directory” for the Fabric “Installation” you just created.
Open the Minecraft launcher, click on
Minecraft Java Edition, click on
Installations, click on the
… button of the Fabric Installation, Click on
GAME DIRECTORY to point to the folder you created, different from
<Use default directory>, click
When Minecraft starts, you should see something similar to this:
For now, close Minecraft so you can install Fabric mods. Mods must be copied to the mods folder of the Installation folder. If you did not set a custom directory for the Installation, the mods folder will be located in:
FINDING THE MINECRAFT MODS FOLDER:
Windows: Press Win+R and type %appdata%\.minecraft\mods and press Ok
Mac OS X: In Finder, in the Go menu, select “Go to Folder” and enter ~/Library/Application Support/minecraft/mods
Linux: ~/.minecraft/mods or /home/<your username>/.minecraft/mods
If you set a custom folder for the installation, the mods folder will be located in
Remember where your mods folder is located, from now on that folder will be referred as “the mods folder”
The “Installation” you just created when you installed the Fabric Mod Loader contains no mods, you now may install the Fabric API, since many mods depend on it.
The Fabric API is the core library for the most common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
If that sounds too complicated just consider the Fabric API as just another mod that will be loaded by the Fabric Loader, and almost all Fabric mods depend on it, so this will be the first mod to install.
Go to https://www.curseforge.com/minecraft/mc-mods/fabric-api/files/all and download the latest file for the version of Minecraft you selected when installing Fabric.
Be aware that Curse usually is not up to date to the latest Minecraft versions, so the version indicated in the “Game Version” column may not be the real actual version of the file! Check the file name for the real Minecraft version the file is intended for.
Download the file to the mods folder, or if the file downloads directly to your “Downloads” folder, copy the file to the mods folder.
To be able to see the list of mods installed and change mod settings, you may want to install the mod Mod Menu (Fabric). Mod Menu adds a button to the Minecraft main screen:
Clicking the button opens a list of installed fabric mods. Mod settings can be changed by clicking the gear button located on the top right:
To install Mod Menu, go to https://www.curseforge.com/minecraft/mc-mods/modmenu and click on “files” and download the correct version for the Minecraft version you installed, download/copy the file to the mods folder.
Now check out Fabric mods here. Download/copy the mods to the mods folder. Again, check for MC versions in the actual file names, do not rely solely on the “Game Version” column. Usually older version mods will work fine in newer versions of MC/Fabric, for example 1.14 and 1.14.1 mods may work fine in 1.14.2 MC/Fabric, so feel free to test them out.
Also be aware that some mods depend on other mods to work. When downloading a mod file, click on the file name, go to the bottom of the page and check out if there is a “Related Projects” entry with dependencies listed. You will have to download the mods listed as required dependencies and may also download the mods listed as optional dependencies.