
OptiFabric Origins
A mod that allows running OptiFine on 1.14.4 and 1.15.2 Fabric. Bringing OptiFabric back to its roots.
Screenshots

About this Mod
OptiFabric Origins (1.14.4 & 1.15.2)
These are the old versions of 1.14.4 and 1.15.2 OptiFabric, updated to work again with the latest Fabric Loader and latest supported Fabric API. I've used code and fixes from later versions of the official OptiFabric to patch these older ones. Full credit goes to modmuss50 for creating OptiFabric and Chocohead for maintaining it, without them this wouldn't have been possible.
For later Minecraft versions see: https://www.curseforge.com/minecraft/mc-mods/optifabric
For even older Minecraft versions see: https://modrinth.com/mod/legacy-optifabric
Important:
- This project does not contain OptiFine, you must download it separately!
- This project is not related or supported by either Fabric or OptiFine.
Installing:
After installing Fabric for 1.14.4 or 1.15.2, you will need to place the corresponding OptiFabric Origins mod jar as well as the OptiFine jar from the official OptiFine website into your mods folder.
See the following table for Fabric Loader support:
| Fabric Loader | mc 1.14.4 | mc 1.15.2 |
|---|---|---|
| 0.16.14+ | v3.0.1 | v3.1.1 |
| 0.15.x - 0.16.13 | v2.0.1 | v2.1.1 |
| 0.9.x - 0.14.x | v1.0.1 | v1.1.1 |

Available Versions
How to Install OptiFabric Origins on Your Client
Install the Mod Loader Locally
Install fabric for your local Minecraft version.
Download the Matching File
Choose the OptiFabric Origins file for fabric and Minecraft 1.15.2.
Install Mod
Place the .jar file in your local .minecraft/mods folder and restart Minecraft. No server-side installation is required.
Compatibility
Mod Loaders
Minecraft Versions
1.15.2, 1.14.4
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Does OptiFabric Origins need to be installed on the Minecraft server?
No. Modrinth marks OptiFabric Origins as unsupported on the server side. Install it only in your local Minecraft mods folder. Your server can remain unchanged unless the mod page lists an additional dependency.
Which version and loader does OptiFabric Origins require?
Use a file for fabric and your exact Minecraft version. Supported versions include 1.15.2, 1.14.4. Files for different loaders are not interchangeable.
OptiFabric Origins is not working – what should I check?
First check the Minecraft version, loader version and required dependencies. Put the .jar file in your local .minecraft/mods folder and remove older duplicates. Because this mod is client-side, adding server RAM will not fix it.
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OptiFabric Origins stays on your client. Host a compatible world for your group.