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    2,054,849 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 25 Oct 2026.636,163 files with their code readFiles whose code we turned back into readable code and read, in an isolated environment. Counted on 25 Oct 2026.269,417 projects gradedProjects with a letter from A to F. Counted on 25 Oct 2026.
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    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    JS Performance Core

    Modpack

    A lightweight, optimized performance modpack. Maximum FPS, minimum footprint. No fluff, just speed.

    100%Modpack: 100% of its graded mods are A or Bof mods A or B
    • Overview100%
    • SecurityPartly checked
    • Privacy2 send data
    • AIAI text
    • CompatibilityUp to 26.2
    • ReleasesLatest 7 Aug

    Download

    JS Performance Core 26.2-1.0.0.mrpack Beta

    Released 7 Aug 2026 · 5.8 KB

    Partly checked: all 15 mods checked, the pack's own files not yet. See Security

    Download
    OverviewSecurityPrivacyAICompatibilityReleases

    Mod grades

    How grades work

    Modpacks get no grade of their own, so we show the grades of its mods. Of its 15 graded mods, 15 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

    • Village F3
    • Forest
    • Village
    • Sky
    • Sky with toasts

    Mods in this pack15 of 15 checked

    The mods of its newest release (Minecraft 26.2 · Fabric, 7 Aug 2026). Each check result is for the latest files of that mod, which may not be the version in this pack.

    ModGradeSecurity
    Cloth Config APIMod · 569.3M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Fabric APIMod · 527.1M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Entity CullingMod · 425.1M downloadsAPassedPassed: our checks found nothing harmful in the latest files.SodiumMod · 412.7M downloadsAPassedPassed: our checks found nothing harmful in the latest files.ImmediatelyFastMod · 329.5M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Mod MenuMod · 244.6M downloadsAPassedPassed: our checks found nothing harmful in the latest files.FerriteCoreMod · 243.7M downloadsAPassedPassed: our checks found nothing harmful in the latest files.LithiumMod · 242.4M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Reese's Sodium OptionsMod · 166.6M downloadsAPassedPassed: our checks found nothing harmful in the latest files.BadOptimizationsMod · 128.4M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Dynamic FPSMod · 126.3M downloadsAPassedPassed: our checks found nothing harmful in the latest files.More CullingMod · 101.8M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Concurrent Chunk Management Engine (Fabric)Mod · 62.7M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Very Many Players (Fabric)Mod · 21.7M downloadsAPassedPassed: our checks found nothing harmful in the latest files.ModernFix-mVUSMod · 14M downloadsAPassedPassed: our checks found nothing harmful in the latest files.

    Details

    Creators
    HMLabs Gaming (HenryMMey)
    License
    All rights reserved
    Downloads
    405
    Created
    1 Jan 2026
    Official page
    Modrinth
    Links
    Issues , Wiki , Discord

    Security

    No harmful code found in the mods we checked

    We checked all 15 mods, without running them.

    We have not checked the files in the pack itself yet (settings, scripts).

    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 · All 15 mods checked
    • Its projects
      See what is in this pack
      15 mods
    • Files in the pack itself
      Not checked yet.
    • 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 all 15 of its mods, without running it.

    Entity CullingCrash reportsMod MenuUnknown data

    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 · All 15 mods read
    • Go online onlyTheir code contacts a web address, for example to check for updates. We found nothing it sends about you.
      Dynamic FPS
      1 mod
    • Send nothing
      Their code contacts no web address.
      12 mods

    AI

    AI used in 1 of the 15 mods we checked

    We found an AI tool in it, or its author declared AI content.

    ModernFix-mVUSClaude Code

    AI was used for its text

    The author declares AI text on Modrinth.

    We looked for AI tools in its texts and found none.

    We have not read its files, images and code history 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 · 2 places read
    • 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.
      Declares AI text.
    • Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.
      Not read yet
    • Description and changelogsThe description, project page and newest changelogs: sentences saying an AI tool was used, and text pasted from an AI chat.
      Nothing found
      3 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 3 files
    Fabric
    1.2126.126.226.3

    Point at or tap a version to see its loaders.

    Runs onWhere to install it: in your game, on the server, or both. As the author says on Modrinth.Install it in your game only. Servers do not need it, so you can join any server.
    RequiresProjects you must also install for it to work. From the author's lists for its files for recent Minecraft versions, or from its project page.Nothing
    OptionalProjects it can work with but does not need. The author lists them.Nothing
    IncludesProjects packed inside its files.15 projects, listed in the Overview tab.
    Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.On average, it gets a file 93 days after a new Minecraft version comes out. Measured on the last 2 Minecraft versions. No file yet for Minecraft 26.3.

    3 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    26.2·Fabric1.0.01.0.0 · JS Performance Core 26.2-1.0.0.mrpack (main file)Beta·7 Aug 2026Partly checkedPartly checked: all 15 mods checked, the pack's own files not yet.Open this file on ModrinthDownload · Beta · 5.8 KB
    1.21.11·Fabric1.1.01.1.0 · 1.21.11-1.1.0.mrpack (main file)Beta·7 Mar 2026Not checkedWe have not checked this file yet.Open this file on ModrinthDownload · Beta · 5.6 KB
    1.21.11·Fabric1.0.01.0.0 · 1.21.11-1.0.0.mrpack (main file)Beta·1 Jan 2026Partly checkedPartly checked: all 15 mods checked, the pack's own files not yet.Open this file on ModrinthDownload · Beta · 5.6 KB