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How to install "OptiFine for Fabric"

OptiFine features for Fabric — powered by Fabric optimization and modern Minecraft performance mods. High FPS even on low‑end systems. 26.1.2 alpha!

Author

iFamished

Downloads

458.2K

Last Updated

Apr 17, 2026

License

LicenseRef-All-Rights-Reserved

Mod Loaders

Fabric

Minecraft Versions

26.1.2 1.21.11 1.20.6 1.19.4 1.18.2 1.17.1
adventure lightweight multiplayer optimization

Quick Install ID

#optifine-for-fabric

Install OptiFine for Fabric in GDLauncher

OptiFine for Fabric runs on Fabric. Pick whichever your existing instance uses, or create a new one. GDLauncher installs the correct loader automatically.

Install on Fabric

  1. Open GDLauncher and create a new instance (the + button on the Library page).
  2. Pick the Fabric loader and a Minecraft version that OptiFine for Fabric supports (26.1.2, 1.21.11, 1.20.6 are common choices).
  3. Open the new instance, go to the Addons tab, and click Add Addons.
  4. Paste the Quick Install ID #optifine-for-fabric, find OptiFine for Fabric in the results, and hit Download. GDLauncher pulls dependencies automatically.
  5. Hit Play. That's it.

Before you install

Make sure your Minecraft version matches what OptiFine for Fabric supports. As of the latest release, 26.1.2, 1.21.11, 1.20.6 are supported. OptiFine for Fabric only runs on Fabric; mods built for other loaders won't work. GDLauncher checks compatibility for you and won't install something incompatible with the instance you've chosen.

Frequently Asked Questions

Is OptiFine for Fabric free?

Yes. OptiFine for Fabric is free to download and install through GDLauncher. GDLauncher itself is also free and ad-free.

What Minecraft versions does OptiFine for Fabric support?

OptiFine for Fabric supports Minecraft 26.1.2, 1.21.11, 1.20.6, 1.19.4, 1.18.2, 1.17.1. GDLauncher will automatically pick a compatible version when you install it.

Does OptiFine for Fabric require Forge or Fabric?

OptiFine for Fabric requires Fabric. GDLauncher will install the correct loader automatically when you create an instance.

How do I install OptiFine for Fabric?

Open GDLauncher, go to your instance's Addons tab, click Add Addons, and paste the Quick Install ID #optifine-for-fabric. GDLauncher handles dependencies and the right Minecraft version automatically.

Who made OptiFine for Fabric?

OptiFine for Fabric is made by iFamished. The full project lives on Modrinth (https://modrinth.com/modpack/optifine-for-fabric).

Need help?

Read our troubleshooting guide, check the guides section, or join the GDLauncher Discord community.

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