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JS Performance Pack project artwork

Modrinth · Minecraft modpack

JS Performance Pack

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

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which JS Performance Pack release should I use?

Updated 3 days ago
Latest stable file JS Performance Pack 26.3
Game version 26.3
Loader Fabric 0.20.1

JS Performance Pack 26.3 is a complete pack release for 26.3 with Fabric 0.20.1. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 27 mods in this pack file.

Pack setup

How should I set up JS Performance Pack for players and a server?

Use JS Performance Pack 26.3 as the pack version. Install the pack as its own launcher instance. The creator’s listing does not name a separate server file, so check the release notes before setting up a dedicated server. Do not upload the ordinary client folder blindly.

Client instance Install JS Performance Pack 26.3
Dedicated server setup Match JS Performance Pack 26.3
Pack loader Fabric 0.20.1

A pack is a matched client and server setup, not one mod with an install-side label. Keep its release, loader, manifest and overrides together.

Plan the server requirements Read the Minecraft installation guide
Referenced mods 27
Client only 17
Server only 0
Not labelled 10

These numbers come from the pack file you chose. “Not labelled” means we don’t know which side it belongs on—not that it is safe everywhere. The file count is not a RAM estimate.

What are the server requirements for JS Performance Pack?

JS Performance Pack 26.3. Change the pack release and its contents or setup may change too.

27 mods in this pack file

The selected pack release is JS Performance Pack 26.3. That file is for Minecraft 26.3 with Fabric 0.20.1. It contains 27 mod projects. The creator’s listing does not name a separate server file. Check their notes before using one, and do not upload an ordinary client folder or rebuild the pack mod by mod. A file count cannot tell us the right RAM, CPU or storage; size the server for the players and world you actually run.

About this project

What kind of pack is JS Performance Pack?

About Modpack

JS Performance Pack is a lightweight Fabric optimization modpack focused on improving Minecraft's performance while preserving the vanilla experience. It combines a carefully selected set of optimization mods to increase FPS, reduce stuttering, improve chunk loading, and lower memory usage without changing gameplay.

The pack is designed to work well on both low-end and high-end systems and is suitable for both singleplayer and multiplayer.

Credits

This modpack would not be possible without the work of the developers behind the included open-source mods. Full credit goes to their respective authors.

Project description from Modrinth.

Mods in JS Performance Pack 26.3

Open any mod on Modpacks.ch to check its files and dependencies.

c2me-fabric-mc26.3-0.4.2-alpha.0.106.jar SHA-1 4223867c5a493b4206027e84234460506dae5a57 · Modrinth version gKKkuSYc · Project link unavailable Side not labelled
cloth-config-fabric-26.3.159.jar SHA-1 9a5cce069380a2047250831dcb19f4ef1b15872d · Modrinth version fg2uyxOW · Project link unavailable Side not labelled
continuity-3.0.1+26.3.jar SHA-1 63d51781b2c87e3b4b4ca98a133db8c98d3f2afb · Modrinth version Jt2sCWTQ · Project link unavailable Client only
Controlling-fabric-26.3-26.3.4.jar SHA-1 c08b9b1ab6e5850c869ae4c22aa8205d164f7304 · Modrinth version V6AbRm67 · Project link unavailable Client only
cwb-5.0.0+26.3.jar SHA-1 7e75cee129623fd6549df2915413e4afc36acf39 · Modrinth version 26KCwNI9 · Project link unavailable Client only
dynamic-fps-3.11.10+minecraft-26.3.0-fabric.jar SHA-1 a4860c9480f0ce1a468e1e4c254214b1f97e19b3 · Modrinth version Jwq069rR · Project link unavailable Client only
entity_model_features-3.3.12-26.3-fabric.jar SHA-1 2d076285c7e0671165fc86a827e62ce88ddcd201 · Modrinth version vF6qLXsA · Project link unavailable Client only
entity_texture_features-7.2.6-26.3-fabric.jar SHA-1 40fd33455e0543a5716f8cb7100d0d3c7abde3d8 · Modrinth version OOEycXyN · Project link unavailable Client only
entityculling-fabric-1.11.3-mc26.3.jar SHA-1 45f47f7a067f5efd733a32767dc3d1d770678b2a · Modrinth version X1g3VhTx · Project link unavailable Client only
fabric-api-0.165.0+26.3.jar SHA-1 8f8a23d6c9fbf7b075b31b4fb0a1007b0488d1d2 · Modrinth version EQKgpeKu · Project link unavailable Side not labelled
fabric-language-kotlin-1.14.2+kotlin.2.4.21.jar SHA-1 f1d4ab6ecd54d9782521333a87eb50724ecb03e0 · Modrinth version SKW1BTL3 · Project link unavailable Side not labelled
ferritecore-9.0.0-fabric.jar SHA-1 eac76ff0f3753422c61b2c44487d0d195d88d4bc · Modrinth version d5ddUdiB · Project link unavailable Side not labelled
ImmediatelyFast-Fabric-1.17.1+26.3.jar SHA-1 f565bbeb201f2305e81761429d3f1f47e1c3a321 · Modrinth version 3MP9UR23 · Project link unavailable Client only
iris-fabric-1.11.7+mc26.3.jar SHA-1 fa03640ba1e4ef2f7ae3619c6373a06e46d0ba2c · Modrinth version vTN4NRGW · Project link unavailable Client only
krypton-0.3.2.jar SHA-1 21b21cb88e412f0bce73b6609de6dd6aca958d7d · Modrinth version UugdIYJw · Project link unavailable Side not labelled
lambdynamiclights-4.13.0+26.3.jar SHA-1 18c8ab40f03219bfcf809a83db6e3958ed8bb866 · Modrinth version rylKnJ4M · Project link unavailable Client only
lithium-fabric-0.26.2+mc26.3.jar SHA-1 dd5a4ec2c68d7601d8bce9076f789c55a5f8bef3 · Modrinth version xS0Q8LSi · Project link unavailable Side not labelled
modernfix-5.27.20-build.2.jar SHA-1 b63337e801fbf2cb420a049d69220c56e083f514 · Modrinth version pa9cAfYg · Project link unavailable Side not labelled
modmenu-21.0.0.jar SHA-1 66ec40f1cd0c037ddca2b5fc6b4b976d479c18e8 · Modrinth version kyy7dbrZ · Project link unavailable Client only
moreculling-fabric-26.3-1.9.0.jar SHA-1 7308b0b0b6fffb0e076cabf97db7fc889d9ada68 · Modrinth version t7vAlfgO · Project link unavailable Client only
placeholder-api-3.2.0+26.3.jar SHA-1 4c455faa6333dbaef72cedbb91fe4a2a03176741 · Modrinth version lXytLqWj · Project link unavailable Side not labelled
reeses-sodium-options-fabric-2.2.6-beta.1+mc26.3.jar SHA-1 7c738d13e66a79f369349f99b77cff5cf45b1526 · Modrinth version GGxJ0JAt · Project link unavailable Client only
Searchables-fabric-26.3-1.0.3.jar SHA-1 2712ba020dd0d373fb39c399c89497340e290117 · Modrinth version wV79bLRS · Project link unavailable Client only
sodium-extra-fabric-0.9.6-beta.1+mc26.3.jar SHA-1 71c63d9af92ce960bf8fefb55b1ba31f89307bde · Modrinth version SachDQow · Project link unavailable Client only
sodium-fabric-0.9.3-beta.1+mc26.3.jar SHA-1 1e6aec741b4134258ba1d7d458bae96a2e8e187e · Modrinth version g6ju16VJ · Project link unavailable Client only
yet_another_config_lib_v3-3.9.7+26.3-fabric.jar SHA-1 e54d86dd4a78f95cd6ec0309d96fae01e661c00d · Modrinth version s9SjoFu1 · Project link unavailable Side not labelled
zoomify-2.17.0+mc26.3-universal.jar SHA-1 7f18090fea4a2ddae01e032d09629d14fa381d3f · Modrinth version RUBpNu00 · Project link unavailable Client only

Pick your setup

JS Performance Pack by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

7 available setups

Made local changes? Try them in a copied instance before touching a world you care about.

Recent files

JS Performance Pack versions and loaders

7 of 7 releases match

Looking for an older file? The official Modrinth project page is in Resources.

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