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    2,053,304 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 2026.269,472 projects gradedProjects with a letter from A to F. Counted on 25 Oct 2026.
    How it worksMalware we foundAPIAboutPrivacyTermsContact

    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    Optimization Maximized

    Modpack

    A Modpack with all the Optimization Mods in the World! (READ DESCRIPTION!)

    84%Modpack: 84% of its graded mods are A or Bof mods A or B
    • Overview84%
    • SecurityPartly checked
    • Privacy7 send data
    • AIAI use
    • CompatibilityUp to 1.21.7
    • ReleasesLatest 17 Jan

    Download

    Optimization Maximized 1.21.7 [Curseforge]-2.0.3.zip Beta

    Released 20 Sep 2025 · 71.5 MB

    Not checked: we have not checked this file yet.

    Download
    OverviewSecurityPrivacyAICompatibilityReleases

    Mod grades

    How grades work

    Modpacks get no grade of their own, so we show the grades of its mods. Of its 89 graded mods, 75 are graded A or B, 12 C and 2 D to F. Its last update came out 9 months ago, for Minecraft 1.21.7. See the mods

    Images

    • FPS Test For Optimization Maximized
    • FPS Test For Vanilla Minecraft [Multiplayer]
    • FPS Test For Fabulously Optimized
    • FPS Test For Optimization Maximized [Multiplayer]
    • FPS Test For Fabulously Optimized [Multiplayer]
    • FPS Test For Vanilla Minecraft

    Content of this pack91 of 91 checked

    The mods of its newest release (Minecraft 1.21.1 · Fabric, 17 Jan 2026). Each check result is for the latest files of that mod, which may not be the version in this pack.

    ProjectGradeSecurity
    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.Architectury APIMod · 460M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Entity CullingMod · 425.1M downloadsAPassedPassed: our checks found nothing harmful in the latest files.ClumpsMod · 420.4M downloadsAPassedPassed: our checks found nothing harmful in the latest files.SodiumMod · 412.7M downloadsAPassedPassed: our checks found nothing harmful in the latest files.CollectiveMod · 342.5M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Iris ShadersMod · 337.4M downloadsAPassedPassed: our checks found nothing harmful in the latest files.ModernFixMod · 334.2M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Puzzles LibMod · 291.5M downloadsAPassedPassed: our checks found nothing harmful in the latest files.YetAnotherConfigLib (YACL)Mod · 266.4M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Kotlin for ForgeMod · 263.5M 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.Fabric Language KotlinMod · 218.7M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Sodium ExtraMod · 181.1M 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.Resourceful ConfigMod · 163.2M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Forge Config API PortMod · 155.4M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Packet FixerMod · 145.3M downloadsAPassedPassed: our checks found nothing harmful in the latest files.ContinuityMod · 145.1M downloadsAPassedPassed: our checks found nothing harmful in the latest files.Fzzy ConfigMod · 139.4M 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.
    1 to 25 of 911234

    1 file not listed: no matching project found.

    Changes since the previous release · 1 removed

    Compared with the release of 27 Sep 2025 for the same platform, Minecraft version and loader. We do not compare the versions of the mods yet.

    Removed
    FastBoot
    Share graded A or B
    up 1 point

    Details

    Creator
    CoolIcee
    License
    MIT License
    Downloads
    3.7K
    Created
    20 Sep 2025
    Official pages
    Modrinth , CurseForge

    Security

    No harmful code found in the projects we checked

    We checked all 91 projects, 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 91 projects checked
    • Its projects
      See what is in this pack
      91 projects
    • 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

    7 mods send something about you

    We read the code of all 89 of its mods, without running it.

    Entity CullingCrash reportsCollectivePlayer IDMod MenuUnknown dataLet Me DespawnUsage dataCrash AssistantUnknown dataNoxesiumPlayer IDExordiumCrash reports

    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 89 mods read
    • Go online onlyTheir code contacts a web address, for example to check for updates. We found nothing it sends about you.
      Iris ShadersDynamic FPSDebugifyAlmanacResourcifyMarlow's Crystal OptimizerSmoke SuppressionIdle TweaksSodium/Embeddium Device Check 钠/铷-设备检测
      9 mods
    • Send nothing
      Their code contacts no web address.
      73 mods

    AI

    AI used in 6 of the 89 mods we checked

    We found an AI tool in them, or their authors declared AI content.

    Iris ShadersdeclaredModernFixClaude CodePuzzles LibdeclaredForge Config API PortdeclaredZoomify (Zoom)Claude CodeServerAddressSpaceFixdeclared

    AI was used to make the pack itself

    ChatGPT is named in the author's texts.

    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 · 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.
      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.
      The author writes that ChatGPT was used
      12 of 17 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 15 files
    Fabric
    1.2126.126.2

    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.91 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.Its newest file is for 1.21.7. It has no file for the 5 newer Minecraft versions. It also supports 1.21.4, a version many recently updated mods still support.

    15 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.21.1·Fabric3.1.13.1.1 · Optimization Maximized 1.21.1-3.0.2.mrpack (main file)·17 Jan 2026Partly checkedPartly checked: all 91 projects checked, the pack's own files not yet.Open this file on ModrinthNot on CurseForgeDownload · Stable · 1.8 MB
    1.21.1·Fabric3.1.03.1.0 · Optimization Maximized 1.21.1 3.1.0.mrpack (main file)·27 Sep 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Stable · 91.1 KB
    1.21.1·Fabric3.0.03.0.0 · Optimization Maximized 1.21.1-3.0.0.mrpack (main file)Beta·24 Sep 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 100.2 KB
    1.21·Fabric2.2.02.2.0 · Optimization Maximized 1.21 [Curseforge]-2.2.0.zipAlpha·23 Sep 2025Not checkedWe have not checked this file yet.Not on ModrinthOpen this file on CurseForgeDownload · Alpha · 13.2 MB
    1.21·Fabric2.1.02.1.0 · Optimization Maximized 1.21-2.2.0.mrpack (main file)·23 Sep 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Stable · 954.6 KB
    1.21.5·Fabric2.1.02.1.0 · Optimization Maximized 1.21.5-2.1.0.mrpack (main file)Alpha·22 Sep 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Alpha · 102.2 MB
    1.21·Fabric2.1.02.1.0 · Optimization Maximized 1.21-2.1.0.mrpack (main file)Beta·22 Sep 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Beta · 103.5 MB
    1.21.4·Fabric2.1.02.1.0 · Optimization Maximized 1.21.4-2.1.0.mrpack (main file)Alpha·22 Sep 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Alpha · 50.7 MB
    1.21.7·Fabric2.1.02.1.0 · Optimization Maximized 1.21.7-2.1.0.mrpack (main file)Alpha·22 Sep 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Alpha · 74.6 MB
    1.21·Fabric2.0.32.0.3 · Optimization Maximized 1.21-2.0.3.mrpack (main file)Beta·21 Sep 2025Not checkedWe have not checked these files yet.Open this file on ModrinthOpen this file on CurseForgeDownload · Beta · 117.7 MB
    1.21.4·Fabric2.0.32.0.3 · Optimization Maximized 1.21.4 [Curseforge]-2.0.3.zipBeta·20 Sep 2025Not checkedWe have not checked this file yet.Not on ModrinthOpen this file on CurseForgeDownload · Beta · 56.0 MB
    1.21.7·Fabric2.0.32.0.3 · Optimization Maximized 1.21.7 [Curseforge]-2.0.3.zipBeta·20 Sep 2025Not checkedWe have not checked this file yet.Not on ModrinthOpen this file on CurseForgeDownload · Beta · 71.5 MB
    1.21.4·Fabric2.0.22.0.2 · Optimization Maximized v2.0.1-1.21.4-2.0.2.mrpack (main file)Alpha·20 Sep 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Alpha · 102.6 KB
    1.21.7·Fabric2.0.22.0.2 · Optimization Maximized v2.0.1-1.21.7-2.0.2.mrpack (main file)Alpha·20 Sep 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Alpha · 93.0 KB
    1.21.7·Fabric2.0.12.0.1 · Optimization Maximized v2.0-2.0.1.mrpack (main file)Alpha·20 Sep 2025Not checkedWe have not checked this file yet.Open this file on ModrinthNot on CurseForgeDownload · Alpha · 92.4 KB