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JS Performance PackMinecraft modpack for 26.3

A lightweight Fabric optimization modpack for Minecraft that boosts FPS, improves chunk loading, reduces lag, and stays close to the vanilla experience.

client onlynewest supported release 26.3TechnologyOptimizationLightweightMultiplayer
Latest version
26.3
Minecraft
1.21.10 to 26.3
Java
Java 25+
Loader
Fabric
Licence
LicenseRef-All-Rights-Reserved
Downloads
32.2k
Updated
10 d ago
Available on
Modrinth
Space NodeOur hosting

Host JS Performance Pack servers

One click and JS Performance Pack is installed with the right loader, on hardware built for it.

  • 26.3
  • Fabric
  • One click modpack install
  • Dependencies handled
  • Tuned startup flags
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

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

Minecraft versions

Every version JS Performance Pack declares support for, newest first, with the Java runtime that version needs.

Other modpacks
MinecraftThroughJavaEvidenceReleased
26.3Fabric25+declared15 Sept 2026
26.2Fabric25+declared16 Jun 2026
26.1.2Fabric25+declared9 Apr 2026
26.1.1Fabric25+declared1 Apr 2026
26.1Fabric25+declared24 Mar 2026
1.21.11Fabric21+declared9 Dec 2025
1.21.10Fabric21+declared7 Oct 2025

Download

From JS Performance Pack’s own host. Nothing is re-hosted here.

Most recently published release

26.3release28 Oct 2026

JS Performance Pack [Fabric 26.3].mrpack · 23 KB · for 26.3 · Fabric

Download this release
81917a1c90d2…
Older versions6
  • 26.224 Jul 202626.222 KB1.6k downloadsa70f927b87be…Get
  • 26.1.224 Jul 202626.1.222 KB306 downloads3cbff4e3f0d7…Get
  • 26.1.124 Jul 202626.1.122 KB27 downloadsaee0d81e7165…Get
  • 26.124 Jul 202626.122 KB68 downloadsad078d724d46…Get
  • 1.21.113 Jul 20261.21.1127 KB1.5k downloadse32d6453d81b…Get
  • 1.21.103 Jul 20261.21.1022 KB184 downloads930d083b3098…Get

Frequently asked

Does JS Performance Pack work on Minecraft 26.3?

Yes. 26.3 is the newest Minecraft version JS Performance Pack 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 JS Performance Pack support?

Everything the author has declared, from 1.21.10 up to 26.3. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install JS Performance Pack 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 JS Performance Pack 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 JS Performance Pack?

Among the supported Minecraft releases above, the highest recorded requirement is Java 25 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is JS Performance Pack 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 JS Performance Pack?

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 JS Performance Pack 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 ✔Uton OptimizatorEffective optimization for weak PCs and even for mobile devices.Fastly 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 28 Oct 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

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