

About Us
PureFPS is a modpack which attempts to bring modern optimizations to every aspect of the game. No cutting corners. The modpack also does not try and seek to alter the original game's feel or it's mechanics, improving only performance.
OptiFine Mechanics
PureFPS attempts to recreate OptiFine's mechanics, such as zooming, connected textures, and shaders.
Built on Quilt
We use the Quilt modloader to bring the functionality of Fabric and the speed of light.
Lightweight
We try our best to cut down on file sizes as one of our core pillars without slashing features.
Open-source Mods
PureFPS commits itself to only using open-source mods, available to the public. We will make our own open-source mods as an alternative, if necessary.
Why should I prefer PureFPS?
Besides the aforementioned features, we will also attempt to expand and update the modpack according to new performance enhancing features. You can request functions or mods, as well as report bugs, here.
Much love from the PureFPS dev! <3
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Downloads as PureFPS 1.21.mrpack
- Download size: 17 KB
- Download link checked 10 Sept 2026 — working
These come from our own check of the pack file, not from the source page.