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

    Achievements Optimizer

    Mod

    Improved achievement performance.

    C76/ 100
    • OverviewC
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 26.1.2
    • ModpacksIn 1,882
    • ReleasesLatest 8 Jun

    Download

    AchievementOptimizer-fabric-26.1.2-2.1.2.jar

    Released 8 Jun 2026 · 16.0 KB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • Forge Config API PortAMinecraft 26.1.2 · Fabric (release 26.1.5)
    • Fabric APINeeded by Forge Config API PortAMinecraft 26.1.2 · Fabric (release 0.155.3)
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade C

    How grades work

    Strengths

    • Security checks passed
    • Widely used

    Points lost

    • No source code link−7 points
    • Many modpacks removed it−5 points
    • No release in 5 months−3 points
    • Releases in only 6 of the last 24 months−2 points
    All 11 criteria

    • Maintenance

      4 points lost23 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.5 months ago (8 Jun 2026) 10 / 12
      Supports popular versionsWhether the project has a file for a Minecraft version that 15% or more of the popular mods updated in the last 6 months also support. A version many modpacks use, like 1.20.1 or 1.21.1, also counts after a release in the last 12 months.26.1.2 on NeoForge and Fabric, 1.20.4 on Forge. 15% or more of the popular mods updated in the last 6 months also have files for 26.1.2. Latest Minecraft: 26.3. 9 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 6 of the last 24 months 4 / 6

    • Stability

      5 points lost17 / 22
      Removed from modpacksHow many modpacks removed it in a later version of the pack. We can only see this in modpacks with two or more versions. A pack that swaps it for another edition of the same project, or that is rebuilt from scratch, does not count.94 of the 369 modpacks with two or more versions removed it in a later one (25%) See the 94 modpacks5 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.No quick fix in 2 years 7 / 7
      Known conflictsHow many projects say they do not work with it, compared with how widely it is used. Packs, small projects, forks, ports, add-ons, alternatives and old versions do not count.None 5 / 5

    • Transparency

      7 points lost3 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.No link on the project page 0 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · bigenergy/achievement-optimizer 3 / 3

    • Popularity

      Full points4 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.13,204,261 4 / 4

    • Track record

      1 point lost7 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.3.1 years, 40 releases 7 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 15 latest files for recent Minecraft versions. See Security
    Total76 / 100

    53.9 of the 71 points that apply = 76 out of 100. The points above are rounded to whole numbers.

    About

    Achievements Optimizer is a performance mod that reduces the work involved in checking players’ inventories for item-based achievements and advancements, particularly in modded servers with many players or complex triggers. It skips some checks early, filters slots before deeper processing, discards empty stacks when configured, and uses a single-pass match for multiple target items while retaining a direct comparison for a single target. These optimizations reduce redundant inventory scans and memory churn without changing achievement gameplay or logic.

    Written from Modrinth , CurseForge and the GitHub README . How we write it

    In-game changes

    Changes the game's code in 1 area: Game data and resourcesChanges 2 game code files in this area: recipes, tags, advancements, language files and other game data..

    Adds no new blocks, items or other content.

    Keeps all of vanilla Minecraft's textures, models and sounds.

    Often used with it

    See all 30
    AttributeFixAsparkABadOptimizationsAConnectivityAPacket FixerA

    Details

    Creator
    bigenergy
    License
    MIT License
    Downloads
    13.2M
    Created
    13 Sep 2023
    Official pages
    Modrinth , CurseForge
    Links
    Issues

    Security

    No harmful code found

    We checked its files and read their code, without running it.

    What it can do on your computer

    Creates settings files
    The mod keeps its settings in the config folder of your game, where you can change or delete them. Only in its files for Fabric 1.21.1 to 26.1.2; NeoForge 1.20.1 to 26.1.2; Forge 1.20.1.

    Why we show this: a mod runs on your computer like any program, so harmful code in it can take your accounts or files. Our checks look for known signs of harm. They cannot prove that a file is harmless. In the grade: malware means no grade, and a Warning in a latest file for a recent Minecraft version lowers it.

    How we checked · All 25 latest files checked, last on 16 Oct 2026
    • FilesWe download the files from Modrinth or CurseForge and look at what is inside them and what their code can do, without running them. Fixed rules tell what is harmful.
      25 latest files: the newest file for each Minecraft version and loader. The answer above is about the 15 for recent versions. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks. See each file in Releases
    • Their codeWe turn the code of the files back into readable code and follow what it does, without running it. This shows what it downloads, what it sends and where your login goes.
      Read without running it
    • 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.
    • Looked for, not foundWe looked for these in the file and did not find them.
      The internet, folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.

    Privacy

    We found nothing it sends

    We read its code without running it: it contacts no web address while you play.

    Why we show this: 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 files read
    • Files readWe read the code without running it. We list each web address the code contacts while you play, and what it sends. Code that is never used is left out.
      The code of all 15 files, for recent Minecraft versions. See each file in Releases
    • Author on ModrinthThe disclosure form on Modrinth, where the author declares crash reports, usage data and advertisements. Since 13 Aug 2026, Modrinth's rules require it when a project collects data on its users or shows advertisements.
      Nothing declared about crash reports, usage data or advertisements.

    AI

    No sign that AI was used to make it

    We looked for AI tools in its texts, files, images and code history and found none.

    No sign of AI in the game

    We found no AI service, AI library or AI model file in its code.

    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 · 6 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 or AI features declared.
    • Code historyThe public code on GitHub: who made each change, credit lines such as "Co-authored-by", and its files.
      Nothing found
    • 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
      32 of 40 changelogs read
    • Its filesFiles that AI coding tools leave behind (like AGENTS.md), and the texts inside the files you download.
      Nothing found
    • Images in its filesHidden data in the images of the files you download, where AI image tools write their name and settings.
      Nothing found
      1 image read
    • Code of the modThe code and files of the mod, read without running it: addresses of AI services, AI libraries, AI model files and a place for your own AI key.
      No AI service, AI library or AI model file
      7 code files read

    Compatibility

    See all 40 files
    Fabric
    NeoForge
    Forge
    1.161.191.2126.1

    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.Needed on the server. If your game has it too, you get extra features.
    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.
    Forge Config API Portin some filesAArchitectury APIin some filesA
    OptionalProjects it can work with but does not need. The author lists them.Nothing
    IncludesProjects packed inside its files.Nothing
    Speed of updatesHow fast it gets a file for new Minecraft versions, on average, compared with similar projects. Not part of the grade.It has no file for Minecraft versions newer than 26.1.2. Many recently updated mods still support 26.1.2.

    Modpacks using this project

    Find modpacks with it
    Modpacks that released a new version with this project, each month
    2001000
    Oct 2024: 120 modpacksNov 2024: 123 modpacksDec 2024: 104 modpacksJan 2025: 115 modpacksFeb 2025: 117 modpacksMar 2025: 128 modpacksApr 2025: 148 modpacksMay 2025: 141 modpacksJun 2025: 155 modpacksJul 2025: 149 modpacksAug 2025: 131 modpacksSep 2025: 129 modpacksOct 2025: 123 modpacksNov 2025: 127 modpacksDec 2025: 147 modpacksJan 2026: 159 modpacksFeb 2026: 142 modpacksMar 2026: 128 modpacksApr 2026: 127 modpacksMay 2026: 147 modpacksJun 2026: 138 modpacksJul 2026: 161 modpacksAug 2026: 153 modpacksSep 2026: 133 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 2024120
    Nov 2024123
    Dec 2024104
    Jan 2025115
    Feb 2025117
    Mar 2025128
    Apr 2025148
    May 2025141
    Jun 2025155
    Jul 2025149
    Aug 2025131
    Sep 2025129
    Oct 2025123
    Nov 2025127
    Dec 2025147
    Jan 2026159
    Feb 2026142
    Mar 2026128
    Apr 2026127
    May 2026147
    Jun 2026138
    Jul 2026161
    Aug 2026153
    Sep 2026133

    1,882 modpacks include Achievements Optimizer in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    All the Mods 10 - ATM1022.5M downloadslast version with it 1 Nov 2024Immersed With Shaders4.5M downloadslast version with it 25 Nov 2025Homestead3.6M downloadslast version with it 12 May 2025Craftoria2.9M downloadslast version with it 27 Nov 2025Craft to Exile 2 - 2.0 Atlas Update2.8M downloadslast version with it 10 Sep 2026Dungeon Heroes (RPG Series)1.9M downloadslast version with it 3 Oct 2026Integrated MC1.9M downloadslast version with it 25 Jan 2025Solo Leveling - Reawakening1.8M downloadslast version with it 16 Oct 2026ZOMBIEMANIA - A Modern Zombie Apocalypse1M downloadslast version with it 13 Oct 2026Biohazard: Project Genesis - The Ultimate Apocalypse965K downloadslast version with it 29 Dec 2025
    1 to 10 of 30123

    Often in the same modpacks

    Mods that modpacks often add together with Achievements Optimizer. Share: how many of the modpacks with Achievements Optimizer also have that mod.

    ProjectTypeShareGrade
    AttributeFixAModin 65% of the modpacks with Achievements OptimizersparkAModin 63% of the modpacks with Achievements OptimizerBadOptimizationsAModin 57% of the modpacks with Achievements OptimizerConnectivityAModin 57% of the modpacks with Achievements OptimizerPacket FixerAModin 56% of the modpacks with Achievements OptimizerLet Me DespawnAModin 54% of the modpacks with Achievements Optimizerfix GPU memory leakAModin 54% of the modpacks with Achievements OptimizerServer Performance - Smooth Chunk SaveAModin 54% of the modpacks with Achievements OptimizerAmendmentsAModin 52% of the modpacks with Achievements OptimizerAI Improvements: Performance TuningAModin 51% of the modpacks with Achievements Optimizer
    1 to 10 of 30123

    Latest files

    The newest file for each Minecraft version and loader. The files for recent versions come first. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.

    MinecraftLoaderVersionSecuritySendsRequires
    26.1.2·Fabric2.1.22.1.2 · AchievementOptimizer-fabric-26.1.2-2.1.2.jarSends: None foundRequires:Forge Config API PortPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1.2·NeoForge2.1.22.1.2 · AchievementOptimizer-neoforge-26.1.2-2.1.2.jarSends: None foundRequires:Architectury APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.11·Fabric2.1.22.1.2 · AchievementOptimizer-fabric-1.21.11-2.1.2.jarSends: None foundRequires:Forge Config API PortPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.11·NeoForge2.1.22.1.2 · AchievementOptimizer-neoforge-1.21.11-2.1.2.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.10·Fabric2.1.12.1.1 · AchievementOptimizer-fabric-1.21.10-2.1.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.10·NeoForge2.1.12.1.1 · AchievementOptimizer-neoforge-1.21.10-2.1.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.9·Fabric2.1.02.1.0 · AchievementOptimizer-fabric-1.21.9-2.1.0.jarSends: None foundRequires:Forge Config API PortPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.9·NeoForge2.1.02.1.0 · AchievementOptimizer-neoforge-1.21.9-2.1.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.4·Fabric2.0.02.0.0 · AchievementOptimizer-fabric-1.21.4-2.0.0.jarSends: None foundRequires:Architectury API, Forge Config API PortArchitectury API, Forge Config API PortPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.4·NeoForge2.0.02.0.0 · AchievementOptimizer-neoforge-1.21.4-2.0.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1 to 10 of 25123

    40 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    26.1.2The latest file for its Minecraft version and loader·NeoForge2.1.22.1.2 · AchievementOptimizer-neoforge-26.1.2-2.1.2.jar (main file)·8 Jun 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 15.2 KB
    26.1.2The latest file for its Minecraft version and loader·Fabric2.1.22.1.2 · AchievementOptimizer-fabric-26.1.2-2.1.2.jar (main file)·8 Jun 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 16.0 KB
    1.21.11The latest file for its Minecraft version and loader·NeoForge2.1.22.1.2 · AchievementOptimizer-neoforge-1.21.11-2.1.2.jar (main file)·10 Jan 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 15.3 KB
    1.21.11The latest file for its Minecraft version and loader·Fabric2.1.22.1.2 · AchievementOptimizer-fabric-1.21.11-2.1.2.jar (main file)·10 Jan 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 16.2 KB
    1.21.10The latest file for its Minecraft version and loader·NeoForge2.1.12.1.1 · AchievementOptimizer-neoforge-1.21.10-2.1.1.jar (main file)·18 Oct 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 15.8 KB
    1.21.10The latest file for its Minecraft version and loader·Fabric2.1.12.1.1 · AchievementOptimizer-fabric-1.21.10-2.1.1.jar (main file)·18 Oct 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 16.8 KB
    1.21.9The latest file for its Minecraft version and loader·NeoForge2.1.02.1.0 · AchievementOptimizer-neoforge-1.21.9-2.1.0.jar (main file)·8 Oct 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 15.8 KB
    1.21.9The latest file for its Minecraft version and loader·Fabric2.1.02.1.0 · AchievementOptimizer-fabric-1.21.9-2.1.0.jar (main file)·8 Oct 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 16.8 KB
    1.21.1The latest file for its Minecraft version and loader·NeoForge2.1.02.1.0 · AchievementOptimizer-neoforge-1.21.1-2.1.0.jar (main file)·17 Aug 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 15.8 KB
    1.21.1The latest file for its Minecraft version and loader·Fabric2.1.02.1.0 · AchievementOptimizer-fabric-1.21.1-2.1.0.jar (main file)·17 Aug 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 16.8 KB
    1.21.4The latest file for its Minecraft version and loader·NeoForge2.0.02.0.0 · AchievementOptimizer-neoforge-1.21.4-2.0.0.jar (main file)·25 Feb 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 7.7 KB
    1.21.4The latest file for its Minecraft version and loader·Fabric2.0.02.0.0 · AchievementOptimizer-fabric-1.21.4-2.0.0.jar (main file)·25 Feb 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 8.5 KB
    1.21.1·NeoForge2.0.02.0.0 · AchievementOptimizer-neoforge-1.21.1-2.0.0.jar (main file)·25 Feb 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 7.7 KB
    1.21.1·Fabric2.0.02.0.0 · AchievementOptimizer-fabric-1.21.1-2.0.0.jar (main file)·25 Feb 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 8.5 KB
    1.21.4·NeoForge1.4.01.4.0 · AchievementOptimizer-1.21.4-1.4.0.jar (main file)·11 Feb 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 8.6 KB
    1.21.3The latest file for its Minecraft version and loader·NeoForge1.3.01.3.0 · AchievementOptimizer-1.21.3-1.3.0.jar·31 Oct 2024PassedOur checks found nothing harmful in this file. Its code was read too.Not on ModrinthOpen this file on CurseForgeDownload · Stable · 9.0 KB
    1.21.1·Fabric1.2.01.2.0 · AchievementOptimizer-fabric-1.21.1-1.2.0.jar (main file)·15 Sep 2024PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.0 KB
    1.21.1·NeoForge1.2.01.2.0 · AchievementOptimizer-1.21.1-1.2.0.jar (main file)·15 Sep 2024PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 9.0 KB
    1.21The latest file for its Minecraft version and loader·NeoForge1.1.0.11.1.0.1 · AchievementOptimizer-1.21.0-1.1.0.1-neo.jar (main file)·22 Jun 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 9.0 KB
    1.21The latest file for its Minecraft version and loader·Fabric1.1.01.1.0 · AchievementOptimizer-fabric-1.21-1.1.0.jar (main file)·21 Jun 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 5.0 KB
    1 to 20 of 4012