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modpack

Optifine On FabricMinecraft modpack for 1.21.9

A Modpack That Strives to Get as much Performance as possible while re-creating many features from the Optifine Mod In Fabric

client onlynewest supported release 1.21.9OptimizationLightweight
Latest version
V3.9
Minecraft
1.21 to 1.21.9
Java
Java 21+
Loader
Fabric
Licence
LicenseRef-All-Rights-Reserved
Downloads
26.7k
Updated
12 mo ago
Available on
Modrinth

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Optifine On Fabric declares support for, newest first, with the Java runtime that version needs.

Other modpacks
MinecraftThroughJavaEvidenceReleased
1.21.9Fabric21+declared30 Sept 2025
1.21.8Fabric21+declared17 Jul 2025
1.21.1Fabric21+declared8 Aug 2024
1.21Fabric21+declared13 Jun 2024

Download

From Optifine On Fabric’s own host. Nothing is re-hosted here.

Most recently published release

V3.9release27 Oct 2025

V3.9 Optifine On Fabric 1.21.9.mrpack · 29 KB · for 1.21.9 · Fabric

Download this release
9ae0451aab75…
Older versions10
  • TESTFOR1.21.94 Oct 20251.21.928 KB278 downloads4db1521fbe32…Get
  • 3.82 Sept 20251.21.839 KB853 downloadsee18b8eeb1d0…Get
  • 3.721 Aug 20251.21.829 KB237 downloads3ed121f1773b…Get
  • 3.619 Aug 20251.21.151 KB426 downloads49d2990802f9…Get
  • V3.5(CAB)7 Oct 20241.21.142 KB12.6k downloads9d534997973d…Get
  • V3.516 Sept 20241.21.141 KB1.7k downloadseacaeed0188e…Get
  • V3.14 Sept 20241.21.140 KB899 downloads476398e9bbe4…Get
  • V330 Aug 20241.21.124 KB3.7k downloads13faf23b4306…Get
  • V212 Aug 20241.2124 KB3.6k downloads13fd22571090…Get
  • V19 Aug 20241.2114 KB862 downloads101b010e5568…Get

Frequently asked

Does Optifine On Fabric work on Minecraft 1.21.9?

Yes. 1.21.9 is the newest Minecraft version Optifine On Fabric declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Optifine On Fabric support?

Everything the author has declared, from 1.21 up to 1.21.9. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Optifine On Fabric on the client or the server?

The client only. There is nothing to install on the server side. That is the author's declared design, not a guarantee for every server: one running anti-cheat or missing a counterpart mod can still object.

Which platform or loader does Optifine On Fabric support?

Fabric. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Optifine On Fabric?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is Optifine On Fabric under?

LicenseRef-All-Rights-Reserved, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Optifine On Fabric?

Use a launcher that imports packs, such as Prism Launcher, the Modrinth App or the CurseForge app, and open the pack file with it. The launcher installs the right loader and mods for you; installing a pack's mods by hand is the error-prone way.

Where do I download Optifine On Fabric safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

MAX FPS: Optimized🚀 MAX FPS WITHOUT UNNECESSARY MODS! Only 16 optimization mods - NOTHING EXTRA! ✅ ALL MAJOR VERSIONS ⚡ INSTALLS ON ANY LAUNCHER! (Guide below)Simply Optimized ReloadedAn unofficial port of Simply Optimized built to support every major mod loader and stay current with the newest versions of Minecraft.FPS+ PvP Boost | Ultimate FPS & Combat Client [ Every Version ]Ultra-lightweight FPS boost & PvP modpack for Fabric. Boost FPS on low-end PCs with Sodium optimizations, lower input lag, cleaner visuals, and combat HUD tweaks built for Hypixel Bedwars, Duels, PotPvP & CPVP. Maximize frames and dominate fights.ElixirA well-researched performance & optimization modpack to make the game run smoother! With shader & Fresh Animations support. 26.3 ✔Just Enough OptimizationJust Enough Optimization - Focused on low memory usage and higher avarege fps. Made for low-end pc so everyone can run MinecraftFastly OptimisedA modpack to enhance the performance of Pojavlauncher, MojoLauncher, Amethyst Launcher, Pojav Zenith Horizon (Zalith Launcher), Zalith Launcher2, Hello Launcher, FoldCraft Launcher, SolCraft Launcher and Low-End-PCs.

Details from Modrinth, where the author last updated it on 27 Oct 2025. We do not host files or republish descriptions. Available download links point to the author’s own release.

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