JS Performance Pack
ModpackA pack that helps the game run smoother and load chunks faster.
Mod grades
How grades workModpacks get no grade of their own, so we show the grades of its mods. Of its 24 graded mods, 24 are graded A or B, 0 C and none D to F. Its last update came out 3 months ago, for Minecraft 26.2. See the mods
Images
About
JS Performance Pack is a lightweight Fabric modpack that improves Minecraft performance while keeping gameplay close to vanilla. Its selected optimization mods aim to boost FPS, reduce stuttering and memory usage, and improve chunk loading, for both singleplayer and multiplayer on low-end and high-end systems.
Written from Modrinth . How we write it
Mods in this pack
The mods of its newest release (Minecraft 26.2 · Fabric, 24 Jul 2026). Each check result is for the latest files of that mod, which may not be the version in this pack.
Cloth Config APIMod · 569.3M downloadsAPassed
Fabric APIMod · 527.1M downloadsAPassed
Entity CullingMod · 425.1M downloadsAPassed
SodiumMod · 412.7M downloadsAPassed
Iris ShadersMod · 337.4M downloadsAPassed
ImmediatelyFastMod · 329.5M downloadsAPassed
YetAnotherConfigLib (YACL)Mod · 266.4M downloadsAPassed
Mod MenuMod · 244.6M downloadsAPassed
FerriteCoreMod · 243.7M downloadsAPassed
LithiumMod · 242.4M downloadsAPassed
Fabric Language KotlinMod · 218.7M downloadsAPassed
Sodium ExtraMod · 181.1M downloadsAPassed
Reese's Sodium OptionsMod · 166.6M downloadsAPassed
ContinuityMod · 145.1M downloadsAPassed
BadOptimizationsMod · 128.4M downloadsAPassed
Dynamic FPSMod · 126.3M downloadsAPassed
Zoomify (Zoom)Mod · 116.3M downloadsAPassed
More CullingMod · 101.8M downloadsAPassed
Text Placeholder APIMod · 91.6M downloadsAPassed
KryptonMod · 82.8M downloadsAPassed
Fast IP PingMod · 80.2M downloadsAPassed
Concurrent Chunk Management Engine (Fabric)Mod · 62.7M downloadsAPassed
Cubes Without BordersMod · 45.4M downloadsAPassed
ModernFix-mVUSMod · 14M downloadsAPassed
NoisiumForkedMod · 5.2M downloads-PassedDetails
Security
No harmful code found in its mods
We checked all 25 mods and the files in the pack itself, without running them.
Why we show this: a modpack installs the files of its mods, and each mod runs on your computer like any program. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: a modpack has no grade of its own, and each mod's result counts in that mod's grade.
How we checked
- Its projects25 mods
- Files in the pack itself25 settings files, no mod jars.
- Author on ModrinthThe disclosure form on Modrinth, where the author declares that the project reads or edits things on your system outside the game. Since 13 Aug 2026, Modrinth's rules require it when this applies.Nothing declared about your system outside the game.
Privacy
2 mods send something about you
We read the code of 24 of its 25 mods, without running it.
Why we show this: a modpack runs the code of its mods, and a mod can send things about you over the internet, like your player name or your login. Contacting an address to check for updates or download files sends nothing about you. Not in the grade: sending data can be normal for what a mod does.
How we checked
- Go online onlyTheir code contacts a web address, for example to check for updates. We found nothing it sends about you.2 mods
- Send nothingTheir code contacts no web address.20 mods
- Not read yetWe have not read their code yet.1 mod
AI
AI used in 3 of the 25 mods we checked
We found an AI tool in them, or their authors declared AI content.
No sign so far that AI was used to make the pack itself
We looked for AI tools in its texts and found none.
We have not read its files and images yet.
Why we show this: some players and servers avoid projects made with AI, and AI in the game can send what you write to an online service. Not in the grade: using AI does not tell whether a project works well or is kept up to date.
How we checked
- Author on ModrinthThe disclosure form on Modrinth. Since 13 Aug 2026, Modrinth's rules require it when a substantial part of the code is AI output, when an asset is mainly AI output, or when the project or its page relies on generative AI.No AI content declared.
- Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.Nothing found6 changelogs read
- Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.Not read yet
- Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.Not read yet
Compatibility
See all 6 filesPoint at or tap a version to see its loaders.