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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.

    World Preview

    Mod

    Allows you to preview a map / seed in the new world screen.

    C71/ 100
    • OverviewC
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 1.21
    • ModpacksIn 435
    • ReleasesLatest Sep 2024

    Download

    world_preview-fabric-1.21-1.3.1.jar

    Released 2 Sep 2024 · 363.1 KB

    Passed: our checks found nothing harmful in this file.

    Download
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade C

    How grades work

    Strengths

    • Security checks passed
    • Public source code and issue tracker
    • Widely used

    Points lost

    • No release in 2.1 years−16 points
    • Some modpacks removed it−3 points
    All 11 criteria

    • Maintenance

      12 points lost15 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.2.1 years ago (5 Sep 2024). 59 modpacks released in the last 6 months still include it, so it keeps 52% of these points. 6 / 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.1.21 on Forge, Fabric and Quilt. 15% or more of the popular mods updated in the last 6 months also have files for 1.21. 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

      3 points lost12 / 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.64 of the 333 modpacks with two or more versions removed it in a later one (19%) See the 64 modpacks7 / 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.1 known conflict, but it does not count in the grade See the known conflict5 / 5

    • Transparency

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

    • Popularity

      Full points4 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.5,286,771 4 / 4

    • Track record

      4 points lost4 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.3.3 years, 70 releases 4 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 3 latest files for recent Minecraft versions. See Security
    Total71 / 100

    45.4 of the 64 points that apply = 71 out of 100. The points above are rounded to whole numbers.

    Images

    • Structures
    • Biomes
    • Heightmap
    • Y-Intersections
    • Open
    • Open in-game

    About

    World Preview lets you inspect a Minecraft seed before generating a world, through a Preview tab in the single-player menu that displays a map of sampled biomes. You can enable structure sampling and toggle individual structure types, switch to a colorized heightmap, or view the blocks intersecting a chosen Y-layer, with the layer below shown in a lighter color. Dragging the map samples and moves across the X and Z axes, while scrolling changes the Y-level so you can explore cave biomes; zoom is adjusted separately in the settings. The mod supports persistent seed storage and biome highlighting, and is designed to work with modded biomes and dimensions, with Terralith and Biomes O’ Plenty among the tested examples.

    Written from Modrinth and CurseForge . How we write it

    In-game changes

    Changes the game's code in 3 areas: User interfaceChanges 4 game code files in this area: menus, screens, tooltips, the chat window and the in-game overlay., World generationChanges 3 game code files in this area: terrain, biomes and structures made when new land is created. and Game data and resourcesChanges 1 game code file 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
    AmendmentsAsparkAChat HeadsADistant HorizonsBYUNG's Better Nether FortressesA

    Details

    Creators
    caeruleusDraconis and Taiterio
    License
    Apache License 2.0
    Downloads
    5.3M
    Created
    20 Jul 2023
    Official pages
    Modrinth , CurseForge
    Links
    Source code , 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. 5 files in your config folder.

    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 21 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.
      21 latest files: the newest file for each Minecraft version and loader. The answer above is about the 3 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 3 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 3 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
      20 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
      31 images 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
      134 code files read

    Compatibility

    See all 70 files
    Fabric
    Forge
    Quilt
    1.201.2126.126.3

    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.
    Fabric APIon QuiltA
    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 1.21. Many recently updated mods still support 1.21.

    Known conflicts

    These projects do not work together with World Preview: their authors or World Preview's author say so. If you install both, the game can crash or some features can stop working. Some of them do the same job as World Preview, so you only need one.

    ProjectTypeDownloadsDeclared by
    World Preview TFCMod6.3K downloadsdeclared by World Preview TFC

    Modpacks using this project

    Find modpacks with it
    Modpacks that released a new version with this project, each month
    50250
    Oct 2024: 31 modpacksNov 2024: 27 modpacksDec 2024: 27 modpacksJan 2025: 27 modpacksFeb 2025: 23 modpacksMar 2025: 27 modpacksApr 2025: 28 modpacksMay 2025: 32 modpacksJun 2025: 34 modpacksJul 2025: 42 modpacksAug 2025: 32 modpacksSep 2025: 25 modpacksOct 2025: 34 modpacksNov 2025: 41 modpacksDec 2025: 32 modpacksJan 2026: 33 modpacksFeb 2026: 20 modpacksMar 2026: 24 modpacksApr 2026: 34 modpacksMay 2026: 28 modpacksJun 2026: 16 modpacksJul 2026: 16 modpacksAug 2026: 21 modpacksSep 2026: 7 modpacks
    Oct 2024Oct 2025Sep 2026
    Modpacks that released a new version with this project, each month
    Oct 202431
    Nov 202427
    Dec 202427
    Jan 202527
    Feb 202523
    Mar 202527
    Apr 202528
    May 202532
    Jun 202534
    Jul 202542
    Aug 202532
    Sep 202525
    Oct 202534
    Nov 202541
    Dec 202532
    Jan 202633
    Feb 202620
    Mar 202624
    Apr 202634
    May 202628
    Jun 202616
    Jul 202616
    Aug 202621
    Sep 20267

    Fewer modpacks put it in their new versions than a year ago: 20 a month now, 32 a year agoThe average of the last 6 months, compared with the same 6 months a year before. We say it only when the change is large..

    435 modpacks include World Preview in at least one of their versions. Here are the 30 most downloaded.

    ModpackDownloadsLast version with it
    Lucky World Invasion2.2M downloadslast version with it 26 Jul 2025The Winter Rescue684K downloadslast version with it 23 Jul 2025Industrial Village569K downloadslast version with it 16 Dec 2025Concatenation162K downloadslast version with it 21 Sep 2026Roguelike Adventures and Dungeons 3140K downloadslast version with it 5 May 2025Create: Delight Remake138K downloadslast version with it 21 Sep 2026[SUC]Surival Useful Circuit生电全家桶136K downloadslast version with it 2 Dec 2024Fabri's Frontiers124K downloadslast version with it 23 Oct 2026Better FPS & Visuals Boost FPS (Fabric)118K downloadslast version with it 10 Jul 2025Better FPS & Visuals Boost FPS (Forge)92K downloadslast version with it 14 Oct 2024
    1 to 10 of 30123

    Often in the same modpacks

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

    ProjectTypeShareGrade
    AmendmentsAModin 53% of the modpacks with World PreviewsparkAModin 51% of the modpacks with World PreviewChat HeadsAModin 45% of the modpacks with World PreviewDistant HorizonsBModin 44% of the modpacks with World PreviewYUNG's Better Nether FortressesAModin 44% of the modpacks with World PreviewComplementary Shaders - UnboundAShaderin 44% of the modpacks with World PreviewYUNG's Better Ocean MonumentsAModin 43% of the modpacks with World PreviewAttributeFixAModin 41% of the modpacks with World PreviewTectonicBModin 40% of the modpacks with World PreviewYUNG's Better Jungle TemplesAModin 40% of the modpacks with World Preview
    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
    1.20.1·Fabric1.3.11.3.1 · world_preview-fabric-1.20.1-1.3.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.1·Forge1.3.1.11.3.1.1 · world_preview-forge-1.20.1-1.3.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.1·Quilt1.3.01.3.0 · world_preview-fabric-1.20.1-1.3.0.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    Older Minecraft versions
    1.21·Fabric1.3.11.3.1 · world_preview-fabric-1.21-1.3.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21·Forge1.3.11.3.1 · world_preview-forge-1.21-1.3.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21·Quilt1.3.01.3.0 · world_preview-fabric-1.21-1.3.0.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.6·Fabric1.3.11.3.1 · world_preview-fabric-1.20.6-1.3.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.6·Forge1.3.11.3.1 · world_preview-forge-1.20.6-1.3.1.jarSends: None foundRequires:NothingPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.6·Quilt1.3.01.3.0 · world_preview-fabric-1.20.6-1.3.0.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.5·Fabric1.2.21.2.2 · world_preview-fabric-1.20.6-1.2.2.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1 to 10 of 21123

    70 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    1.20.1The latest file for its Minecraft version and loader·Forge1.3.1.11.3.1.1 · world_preview-forge-1.20.1-1.3.1.jar (main file)·2 Sep 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 362.1 KB
    1.21The latest file for its Minecraft version and loader·Fabric1.3.11.3.1 · world_preview-fabric-1.21-1.3.1.jar (main file)·2 Sep 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 363.1 KB
    1.21The latest file for its Minecraft version and loader·Forge1.3.11.3.1 · world_preview-forge-1.21-1.3.1.jar (main file)·2 Sep 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 362.7 KB
    1.20.6The latest file for its Minecraft version and loader·Fabric1.3.11.3.1 · world_preview-fabric-1.20.6-1.3.1.jar (main file)·2 Sep 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 362.7 KB
    1.20.6The latest file for its Minecraft version and loader·Forge1.3.11.3.1 · world_preview-forge-1.20.6-1.3.1.jar (main file)·2 Sep 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 362.3 KB
    1.20.4The latest file for its Minecraft version and loader·Fabric1.3.11.3.1 · world_preview-fabric-1.20.4-1.3.1.jar (main file)·2 Sep 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 367.9 KB
    1.20.4The latest file for its Minecraft version and loader·Forge1.3.11.3.1 · world_preview-forge-1.20.4-1.3.1.jar (main file)·2 Sep 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 362.8 KB
    1.20.2The latest file for its Minecraft version and loader·Fabric1.3.11.3.1 · world_preview-fabric-1.20.2-1.3.1.jar (main file)·2 Sep 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 370.5 KB
    1.20.2The latest file for its Minecraft version and loader·Forge1.3.11.3.1 · world_preview-forge-1.20.2-1.3.1.jar (main file)·2 Sep 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 365.1 KB
    1.20.1The latest file for its Minecraft version and loader·Fabric1.3.11.3.1 · world_preview-fabric-1.20.1-1.3.1.jar (main file)·2 Sep 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 366.1 KB
    1.21·Forge1.3.01.3.0 · world_preview-forge-1.21-1.3.0.jar (main file)·27 Jun 2024PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 359.1 KB
    1.21The latest file for its Minecraft version and loader·Fabric, Quilt1.3.01.3.0 · world_preview-fabric-1.21-1.3.0.jar (main file)·27 Jun 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 359.5 KB
    1.20.6·Forge1.3.01.3.0 · world_preview-forge-1.20.6-1.3.0.jar (main file)·27 Jun 2024PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 358.7 KB
    1.20.6The latest file for its Minecraft version and loader·Fabric, Quilt1.3.01.3.0 · world_preview-fabric-1.20.6-1.3.0.jar (main file)·27 Jun 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 359.1 KB
    1.20.4·Forge1.3.01.3.0 · world_preview-forge-1.20.4-1.3.0.jar (main file)·27 Jun 2024PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 355.3 KB
    1.20.4The latest file for its Minecraft version and loader·Fabric, Quilt1.3.01.3.0 · world_preview-fabric-1.20.4-1.3.0.jar (main file)·27 Jun 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 360.4 KB
    1.20.2·Forge1.3.01.3.0 · world_preview-forge-1.20.2-1.3.0.jar (main file)·27 Jun 2024PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 357.6 KB
    1.20.2The latest file for its Minecraft version and loader·Fabric, Quilt1.3.01.3.0 · world_preview-fabric-1.20.2-1.3.0.jar (main file)·27 Jun 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 363.0 KB
    1.20.1·Forge1.3.01.3.0 · world_preview-forge-1.20.1-1.3.0.jar (main file)·27 Jun 2024PassedOur checks found nothing harmful in this file.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 354.6 KB
    1.20.1The latest file for its Minecraft version and loader·Fabric, Quilt1.3.01.3.0 · world_preview-fabric-1.20.1-1.3.0.jar (main file)·27 Jun 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthOpen this file on CurseForgeDownload · Stable · 358.5 KB
    1 to 20 of 701234