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    2,055,424 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 2026.269,392 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.

    slab back

    Mod

    Craft slabs back to original block.

    A98/ 100
    • OverviewA
    • SecurityPassed
    • PrivacyNone found
    • AINone found
    • CompatibilityUp to 26.3
    • ModpacksIn 14
    • ReleasesLatest 14 Sep

    Download

    slab-back-1.10.1.jar

    Released 14 Sep 2026 · 45.0 KB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • Fabric APIAMinecraft 26.3 · Fabric (release 0.165.0)
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade A

    How grades work

    Strengths

    • Security checks passed
    • Regular releases for the newest Minecraft versions
    • Stable releases
    • Public source code and issue tracker
    • Around for years

    Points lost

    • Under 5 million downloads−1 point
    All 11 criteria

    • Maintenance

      Full points27 / 27
      Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.6 weeks ago (14 Sep 2026) 12 / 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.26.3 on Fabric (latest) 9 / 9
      Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 10 of the last 24 months 6 / 6

    • Stability

      Full points22 / 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.2 of the 12 modpacks with two or more versions removed it in a later one (17%) 10 / 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

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

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.57,579 3 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.2.4 years, 23 releases 8 / 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
    Total98 / 100

    69.8 of the 71 points that apply = 98 out of 100. The points above are rounded to whole numbers.

    Images

    • all slabs

    About

    Slab Back lets you craft pairs of slabs back into their original blocks, placing the slabs side by side for the recipe. It supports a broad range of slabs, including common wood and stone types such as oak, cherry, cobblestone, and deepslate, as well as colored concrete and wool, copper variants, and materials such as cinnabar and sulfur.

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

    In-game changes

    Does not change the game's code directly.

    Adds no new blocks, items or other content.

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

    Details

    Creator
    nether_knight
    License
    MIT License
    Downloads
    58K
    Created
    23 Apr 2024
    Official page
    Modrinth
    Links
    Source code , Issues

    Security

    No harmful code found

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

    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 5 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.
      5 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 so far that AI was used to make it

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

    We have not read its 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
      20 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
    • 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

    Compatibility

    See all 23 files
    Fabric
    Data pack
    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 on the server. Players join without installing it. It also works in singleplayer.
    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 APIA
    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.Faster than most mods. On average, it gets a file 3 days after a new Minecraft version comes out. Measured on the last 6 Minecraft versions.

    Modpacks using this project

    Find modpacks with it

    Modpacks that include slab back in at least one of their versions, most downloaded first.

    ModpackDownloadsLast version with it
    Sensible MC179K downloadslast version with it 13 Oct 2026Zombie Apocalypse: Optimized15K downloadslast version with it 26 Nov 2025Lively Craft1.4K downloadslast version with it 27 Sep 2026Almost Vanilla860 downloadslast version with it 25 Jun 2025Progression Reimagined836 downloadslast version with it 20 Sep 2025Sentari Teocara834 downloadslast version with it 12 Oct 2024Stracciatella Modpack640 downloadslast version with it 13 Oct 2024Shdw & Cmpz Vanilla Remix v1523 downloadslast version with it 24 Oct 2025AA's Packs475 downloadslast version with it 7 Sep 2025Kaios MC [Fabric]457 downloadslast version with it 8 Sep 2024
    1 to 10 of 1412

    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 to 26.3·Fabric1.10.11.10.1 · slab-back-1.10.1.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.2 to 1.21.11·Fabric1.8.11.8.1 · slab-back-1.8.1.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21 to 1.21.1·Fabric1.2.31.2.3 · slab-back-1.2.3.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    Older Minecraft versions
    1.20.5 to 1.20.6·Fabric1.1.01.1.0 · slab-back-1.1.0.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.20.3 to 1.20.4·Fabric1.0.01.0.0 · slab-back-1.0.0.jarSends: None foundRequires:Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.

    23 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    26.1 to 26.326.1 to 26.3The latest file for its Minecraft version and loader·Fabric1.10.11.10.1 · slab-back-1.10.1.jar (main file)·14 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 45.0 KB
    26.1 to 26.326.1 to 26.3·Data pack1.10.11.10.1 · slab back 1.10.1.zip (main file)·14 Sep 2026Not checkedWe have not checked this file yet.Open this file on ModrinthDownload · Stable · 35.0 KB
    26.1 to 26.226.1 to 26.2·Fabric1.101.10 · slab-back-1.10.jar (main file)·7 Aug 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 45.0 KB
    26.1 to 26.226.1 to 26.2·Data pack1.101.10 · slab_back-26_1-26.3S7.zip (main file)·7 Aug 2026Not checkedWe have not checked this file yet.Open this file on ModrinthDownload · Stable · 35.0 KB
    26.1 to 26.226.1 to 26.2·Fabric1.91.9 · slab-back-1.9.jar (main file)·17 Jun 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 30.5 KB
    26.1 to 26.226.1 to 26.2·Data pack1.91.9 · slab-back 1.9.zip (main file)·14 Jun 2026Not checkedWe have not checked this file yet.Open this file on ModrinthDownload · Stable · 23.7 KB
    26.1 to 26.1.226.1 to 26.1.2·Fabric1.8.21.8.2 · slab-back-1.8.2+fabric.jar (main file)·24 Mar 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 55.8 KB
    26.1 to 26.1.226.1 to 26.1.2·Data pack1.8.21.8.2 · slab-back 1.8.2.zip (main file)·24 Mar 2026Not checkedWe have not checked this file yet.Open this file on ModrinthDownload · Stable · 43.7 KB
    1.21.2 to 1.21.111.21.2 to 1.21.11The latest file for its Minecraft version and loader·Fabric1.8.11.8.1 · slab-back-1.8.1.jar (main file)·15 Dec 2025PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 28.0 KB
    1.20.3 to 1.21.111.20.3 to 1.21.11·Data pack1.8.11.8.1 · slab-back-1.8.1.zip (main file)·15 Dec 2025Not checkedWe have not checked this file yet.Open this file on ModrinthDownload · Stable · 91.6 KB
    1.21.2 to 1.21.101.21.2 to 1.21.10·Fabric1.8.01.8.0 · slab-back-1.8.0.jar (main file)·5 Oct 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 28.0 KB
    1.20.3 to 1.21.101.20.3 to 1.21.10·Data pack1.8.01.8.0 · slab-back 1.8.0.zip (main file)·5 Oct 2025Not checkedWe have not checked this file yet.Open this file on ModrinthDownload · Stable · 91.6 KB
    1.21.7 to 1.21.81.21.7 to 1.21.8·Fabric1.7.21.7.2 · slab-back-1.7.2.jar (main file)·30 Jun 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 27.9 KB
    1.20.3 to 1.21.81.20.3 to 1.21.8·Data pack1.7.21.7.2 · slab-back 1.7.2.zip (main file)·30 Jun 2025Not checkedWe have not checked this file yet.Open this file on ModrinthDownload · Stable · 91.6 KB
    1.20.3 to 1.21.61.20.3 to 1.21.6·Data pack1.7.11.7.1 · slab-back 1.7.1.zip (main file)·22 Jun 2025Not checkedWe have not checked this file yet.Open this file on ModrinthDownload · Stable · 283.6 KB
    1.21.5·Fabric1.7.01.7.0 · slab-back-1.7.0.jar (main file)·29 Mar 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 27.9 KB
    1.20.3 to 1.21.51.20.3 to 1.21.5·Data pack1.7.01.7.0 · slab-back 1.7.0..zip (main file)·29 Mar 2025Not checkedWe have not checked this file yet.Open this file on ModrinthDownload · Stable · 89.3 KB
    1.21.2 to 1.21.41.21.2 to 1.21.4·Fabric1.6.01.6.0 · slab-back-1.6.0.jar (main file)·23 Feb 2025PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 28.0 KB
    1.20.3 to 1.21.41.20.3 to 1.21.4·Data pack1.6.01.6.0 · slab-back 1.6.0.zip (main file)·7 Dec 2024Not checkedWe have not checked this file yet.Open this file on ModrinthDownload · Stable · 91.2 KB
    1.21 to 1.21.11.21 to 1.21.1The latest file for its Minecraft version and loader·Fabric1.2.31.2.3 · slab-back-1.2.3.jar (main file)·5 Jun 2024PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 28.2 KB
    1 to 20 of 2312