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    2,046,932 files checkedFiles from Modrinth and CurseForge we downloaded and checked. Counted on 24 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 24 Oct 2026.269,480 projects gradedProjects with a letter from A to F. Counted on 24 Oct 2026.
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    © 2026 ModgradeNot an official Minecraft product. Not approved by or associated with Mojang or Microsoft.

    thorium

    Mod

    thorium is a fabric mod that fixes 50+ small bugs and annoyances in Minecraft.

    D58/ 100
    • OverviewD
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.19.3
    • ModpacksIn 118
    • ReleasesLatest Dec 2022

    Download

    thorium-1.4.0.jar

    Released 11 Dec 2022 · 704.4 KB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade D

    How grades work

    Strengths

    • Security checks passed
    • Stable releases
    • Public source code and issue tracker

    Points lost

    • No release in 3.9 years−26 points
    • Under 5 million downloads−1 point
    All 11 criteria

    • Maintenance

      18 points lost9 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.3.9 years ago (11 Dec 2022) 0 / 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.1.19.3 on Fabric and Quilt. 15% or more of the popular mods updated in the last 6 months also have files for 1.19.2. 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.No release in the last 24 months 0 / 6

    • Stability

      Full points15 / 15
      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.8 of the 90 modpacks with two or more versions removed it in a later one (9%) 10 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.Not measured yet.
      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

      Full points10 / 10
      Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · PotassiumMC/thorium 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · PotassiumMC/thorium 3 / 3

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.397,600 3 / 4

    • Track record

      8 points lost0 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.4.6 years, 9 releases 0 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 4 latest files. See Security
    Total58 / 100

    37.3 of the 64 points that apply = 58 out of 100. The points above are rounded to whole numbers.

    About

    Thorium is a Fabric mod that fixes more than 50 small Minecraft bugs and annoyances without changing gameplay mechanics. Its fixes cover issues with spectator-mode transitions, portal travel, inventory and interface behavior, rendering, sound controls, and other details; examples include lingering effects or overlays in spectator mode, hotbar resets after respawning, and sounds playing despite their volume being muted. Thorium is optional for joining a server, though the project recommends installing it on both client and server because some issues cannot be fixed from only one side.

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

    In-game changes

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.18.2 to 1.19.3.

    Changes the game's code in 11 areas: User interfaceChanges 12 game code files in this area: menus, screens, tooltips, the chat window and the in-game overlay., Mobs and their behaviorChanges 8 game code files in this area: mobs, animals, villagers, projectiles and how they move and act., Rendering and graphicsChanges 7 game code files in this area: drawing mobs, items, particles and textures on screen., PlayerChanges 3 game code files in this area: your character: movement, abilities, hunger and controls., Networking and multiplayerChanges 3 game code files in this area: connections, the server list and what is sent between your game and a server., Blocks and fluidsChanges 3 game code files in this area: how blocks, fluids and redstone work., Inventory and itemsChanges 2 game code files in this area: items, chests and other containers, crafting and enchanting., World generationChanges 1 game code file in this area: terrain, biomes and structures made when new land is created., World renderingChanges 1 game code file in this area: drawing the terrain, sky, clouds and weather., Game coreChanges 1 game code file in this area: the main loop, lighting and other code the whole game uses. and Server and world logicChanges 1 game code file in this area: the world, commands, scoreboards, saved data and game rules..

    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
    Mod MenuALithiumAReese's Sodium OptionsAFerriteCoreAStarlight (Fabric)-

    Details

    Creator
    NoahvdAa
    License
    GNU Lesser General Public License v3.0 only
    Downloads
    398K
    Created
    13 Mar 2022
    Official pages
    Modrinth , CurseForge
    Links
    Source code , Issues , Discord

    Security

    No harmful code found

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.18.2 to 1.19.3.

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

    What it can do on your computer

    Connects to the internet
    It has code that can go online, for example to check for updates, load skins or send crash reports. Only in its files for Fabric 1.19 to 1.19.3. See Privacy
    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 1.19 to 1.19.3.

    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 4 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.
      4 latest files: the newest file for each Minecraft version and loader. None is for a recent Minecraft version, so the answer above is about all of them. 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.
      Folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.

    Privacy

    We found nothing it sends

    It has no file for a recent Minecraft version. This is about its files for Minecraft 1.18.2 to 1.19.3.

    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 4 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 4 files, for Minecraft 1.18.2 to 1.19.3. 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 so far that AI was used to make it

    We looked for AI tools in its description, files and images and found none.

    We have not read its changelogs and code history yet.

    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 · 5 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.
      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 in the description
      Changelogs not read yet
    • 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
      273 code files read

    Compatibility

    See all 9 files
    Fabric
    Quilt
    1.181.201.2126.1

    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.Works in your game or on a server. With both, 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.Nothing
    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.Its newest file is for 1.19.3. It has no file for the 6 newer Minecraft versions. It also supports 1.19.2, a version many recently updated mods still support.

    Related projects

    Projects that need thorium to work.

    ProjectTypeDownloadsGrade
    F.S. Co. Banira Pack83%Modpack: 83% of its graded mods are A or BModpack1.2K downloadsYAMP63%Modpack: 63% of its graded mods are A or BModpack534 downloads

    Modpacks using this project

    Find modpacks with it

    118 modpacks include thorium in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Breakneck: Optimized751K downloadslast version with it 25 Jun 2023Dreamcraft [FABRIC]323K downloadslast version with it 1 Mar 2023Cobblemon SMP240K downloadslast version with it 29 Jul 2023Euphoric Curiosity162K downloadslast version with it 8 Jan 2023Medieval Immersed78K downloadslast version with it 13 Apr 2023Roanoke Cobblemon76K downloadslast version with it 29 Jul 2023Legacies52K downloadslast version with it 2 Sep 2023OptiCraft45K downloadslast version with it 8 Sep 2022Cobblemon PokeFactory39K downloadslast version with it 14 Apr 2023Newt+ (Sodium Edition)38K downloadslast version with it 24 Nov 2022
    1 to 10 of 30123

    Often in the same modpacks

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

    ProjectTypeShareGrade
    Mod MenuAModin 94% of the modpacks with thoriumLithiumAModin 93% of the modpacks with thoriumReese's Sodium OptionsAModin 86% of the modpacks with thoriumFerriteCoreAModin 86% of the modpacks with thoriumStarlight (Fabric)-Modin 84% of the modpacks with thoriumLazyDFU-Modin 84% of the modpacks with thoriumSodium ExtraAModin 84% of the modpacks with thoriumKryptonAModin 78% of the modpacks with thoriumDynamic FPSAModin 73% of the modpacks with thoriumMemory Leak Fix-Modin 69% of the modpacks with thorium
    1 to 10 of 30123

    Latest files

    The newest file for each Minecraft version and loader. None is for a recent Minecraft version. Recent versions: those released in the last 2 years, plus 1.20.1 and 1.21.1, among the most played in modpacks.

    MinecraftLoaderVersionSecuritySendsRequires
    Older Minecraft versions
    1.19.3·Fabric, Quilt1.4.01.4.0 · thorium-1.4.0.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.19.2·Fabric, Quilt1.3.21.3.2 · thorium-1.3.2.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.19·Fabric, Quilt1.3.11.3.1 · thorium-1.3.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.18.2·Fabric, Quilt1.2.11.2.1 · thorium-1.2.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.

    9 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.19.3The latest file for its Minecraft version and loader·Fabric, Quilt1.4.01.4.0 · thorium-1.4.0.jar (first file)·11 Dec 2022PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 704.4 KB
    1.19.2The latest file for its Minecraft version and loader·Fabric, Quilt1.3.21.3.2 · thorium-1.3.2.jar (first file)·7 Aug 2022PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 706.5 KB
    1.19The latest file for its Minecraft version and loader·Fabric, Quilt1.3.11.3.1 · thorium-1.3.1.jar (first file)·12 Jun 2022PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 708.3 KB
    1.19·Fabric, Quilt1.3.01.3.0 · thorium-1.3.0.jar (first file)·11 Jun 2022PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 708.2 KB
    1.18.2The latest file for its Minecraft version and loader·Fabric, Quilt1.2.11.2.1 · thorium-1.2.1.jar (first file)·4 May 2022PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 60.1 KB
    1.18.2·Fabric1.2.01.2.0 · thorium-1.2.0.jar (first file)·2 May 2022PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 60.1 KB
    1.18.2·Fabric, Quilt1.1.11.1.1 · thorium-1.1.1.jar (first file)·30 Mar 2022PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 61.7 KB
    1.18.2·Fabric1.1.01.1.0 · thorium-1.1.0.jar (first file)·30 Mar 2022PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 61.7 KB
    1.18.2·Fabric1.0.01.0.0 · thorium-1.0.0.jar (first file)·13 Mar 2022PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 55.7 KB