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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.

    Server Backpacks!

    Mod

    Backpacks that let you carry more items on your server.

    A95/ 100
    • OverviewA
    • SecurityPassed
    • PrivacyGoes online
    • AINone found
    • CompatibilityUp to 26.3
    • ModpacksIn 10
    • ReleasesLatest 15 Sep

    Download

    serverbackpacks-1.6+26.3.jar

    Released 15 Sep 2026 · 655.5 KB

    Passed: our checks found nothing harmful in this file.

    Download

    Required to run

    • Fabric APIAMinecraft 26.3 · Fabric (release 0.165.0)
    • PolymerAMinecraft 26.3 · Fabric (release 0.18.5)
    OverviewSecurityPrivacyAICompatibilityModpacksReleases

    Why grade A

    How grades work

    Strengths

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

    Points lost

    • Releases replaced within 3 days to fix a problem−3 points
    • 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 (15 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 19 of the last 24 months 6 / 6

    • Stability

      3 points lost19 / 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 5 modpacks with two or more versions removed it in a later one (40%) 10 / 10
      Quick fixesHow often a release needed a quick fix: a new release within 3 days to fix a problem in it.18 of its 89 releases in 2 years needed a quick fix (20%) See the 18 releases4 / 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 · Rouesvm/Backpacks-Polymer 7 / 7
      Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · Rouesvm/Backpacks-Polymer 3 / 3

    • Popularity

      1 point lost3 / 4
      DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.41,359 3 / 4

    • Track record

      Full points8 / 8
      AgeHow long the project has existed. It counts less when no new file came out recently.2.2 years, 146 releases 8 / 8

    • Security

      Passed
      File checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 10 latest files for recent Minecraft versions. See Security
    Total95 / 100

    67.4 of the 71 points that apply = 95 out of 100. The points above are rounded to whole numbers.

    Images

    • Banner
    • Colored Backpacks!
    • Bedrock Support
    • Small Backpack

    About

    Server Backpacks! is a server-side mod that adds expandable storage and backpack utilities, using Polymer and supporting GeyserMC. Its six backpack types range from small, medium, and large bags with 9, 18, and 27 slots to an ender backpack for accessing your ender chest anywhere, a global backpack with 54 shared slots that can be linked to other global backpacks using an ender pearl, and a lava backpack that cycles its rows to discard items when full. Backpacks can be dyed, used like bundles to insert items, opened from the inventory, or placed on the ground; with Trinkets installed, they can also be worn on the back. Modules are attached using a smithing table, and the Capacity enchantment adds nine storage slots per level to medium and large backpacks. Geyser support lets Bedrock players use the mod, though they cannot see backpacks while wearing them; Java players can see worn backpacks.

    Written from Modrinth . How we write it

    In-game changes

    Changes the game's code in 3 areas: Mobs and their behaviorChanges 2 game code files in this area: mobs, animals, villagers, projectiles and how they move and act., Inventory and itemsChanges 1 game code file in this area: items, chests and other containers, crafting and enchanting. and Blocks and fluidsChanges 1 game code file in this area: how blocks, fluids and redstone work..

    Libraries packed inside it change 16 more game code files: Packet Tweaker, Server Translations API and sgui.

    Adds 2 enchantments: Capacity and Link Scroller; 65 recipes.

    Counted from the names and data files in the mod, so the list may not be complete.

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

    Details

    Creator
    Rouesvm
    License
    MIT License
    Downloads
    42K
    Created
    29 Aug 2024
    Official page
    Modrinth
    Links
    Source code , Issues , Discord

    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, 1.21.5 to 26.3.
    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 1.21.8. See Privacy

    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 13 latest files checked, last on 20 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.
      13 latest files: the newest file for each Minecraft version and loader. The answer above is about the 10 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.
      Folders outside the game, other programs, updating itself, the webcam or microphone, an AI service.

    Privacy

    We found nothing it sends about you

    We read its code without running it: it contacts 1 web address while you play.

    Like any connection, each address it contacts sees your IP address.

    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 10 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 10 files, for recent Minecraft versions. See each file in Releases
    • sessionserver.mojang.com
      Talks to the Minecraft login service.From a bundled library.
    • 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
      237 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
      190 code files read

    Compatibility

    See all 146 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 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 APIAPolymerA
    OptionalProjects it can work with but does not need. The author lists them.
    Geyserin some filesAPolymer Patch for Trinkets Updatedin some filesB
    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 2 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 Server Backpacks! in at least one of their versions, most downloaded first.

    ModpackDownloadsLast version with it
    NMI - server side mods only12K downloadslast version with it 23 Nov 2024Better Adventures ++ Core9.4K downloadslast version with it 11 Feb 2026Spectrumcraft SMP3.6K downloadslast version with it 1 Aug 2025unstagle3.4K downloadslast version with it 16 May 2026Survival Reborn2.9K downloadslast version with it 23 Jul 2025vanillia2.6K downloadslast version with it 22 Jun 2026LAN Server Enhanced367 downloadslast version with it 6 Jun 2026Poly-Craft151 downloadslast version with it 6 Mar 2026Two Chicken Fries137 downloadslast version with it 27 Sep 20251st Arternic Games112 downloadslast version with it 8 Jul 2026

    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
    26.3·Fabric1.61.6 · serverbackpacks-1.6+26.3.jarSends: None foundRequires:Fabric API, PolymerPassedOur checks found nothing harmful in this file. Its code was read too.
    26.2·Fabric1.61.6 · serverbackpacks-1.6+26.2.jarSends: None foundRequires:Fabric API, PolymerPassedOur checks found nothing harmful in this file. Its code was read too.
    26.1 to 26.1.2·Fabric1.5.91.5.9 · serverbackpacks-1.5.9+26.1.jarSends: None foundRequires:Polymer, Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.11·Fabric1.5.51.5.5 · serverbackpacks-1.5.5+1.21.11.jarSends: None foundRequires:Polymer, Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.9 to 1.21.10·Fabric1.4.91.4.9 · serverbackpacks-1.4.9+1.21.9.jarSends: None foundRequires:Polymer, Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.8·Fabric1.4.91.4.9 · serverbackpacks-1.4.9+1.21.8.jarSends: Nothing about youRequires:Fabric API, PolymerPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.6 to 1.21.7·Fabric1.3.91.3.9 · serverbackpacks-1.3.9+1.21.6.jarSends: None foundRequires:Fabric API, PolymerPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.5·Fabric1.3.81.3.8 · serverbackpacks-1.3.8+1.21.5.jarSends: None foundRequires:Polymer, Fabric APIPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.4·Fabric1.2.101.2.10 · serverbackpacks-1.2.10+1.21.4.jarSends: None foundRequires:Fabric API, PolymerPassedOur checks found nothing harmful in this file. Its code was read too.
    1.21.1·Fabric1.4.21.4.2 · serverbackpacks-1.4.2+1.21.1.jarSends: None foundRequires:Fabric API, PolymerPassedOur checks found nothing harmful in this file. Its code was read too.
    1 to 10 of 1312

    146 releases

    MinecraftLoaderVersionReleasedSecurityGet it onDownload
    26.3The latest file for its Minecraft version and loader·Fabric1.61.6 · serverbackpacks-1.6+26.3.jar (main file)·15 Sep 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 655.5 KB
    26.2The latest file for its Minecraft version and loader·Fabric1.61.6 · serverbackpacks-1.6+26.2.jar (main file)·19 Jun 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 653.7 KB
    26.1 to 26.1.226.1 to 26.1.2The latest file for its Minecraft version and loader·Fabric1.5.91.5.9 · serverbackpacks-1.5.9+26.1.jar (main file)·12 Jun 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 653.8 KB
    1.21.1The latest file for its Minecraft version and loader·Fabric1.4.21.4.2 · serverbackpacks-1.4.2+1.21.1.jar (main file)·10 Jun 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 605.5 KB
    26.1 to 26.1.226.1 to 26.1.2·Fabric1.5.81.5.8 · serverbackpacks-1.5.8+26.1.jar (main file)·10 Jun 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 653.5 KB
    26.1 to 26.1.226.1 to 26.1.2·Fabric1.5.71.5.7 · serverbackpacks-1.5.7+26.1.jar (main file)·4 Jun 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 653.5 KB
    26.1 to 26.1.226.1 to 26.1.2·Fabric1.5.61.5.6 · serverbackpacks-1.5.6+26.1.jar (main file)·27 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 653.2 KB
    1.21.1·Fabric1.4.11.4.1 · serverbackpacks-1.4.1+1.21.1.jar (main file)·18 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 605.5 KB
    1.21.11The latest file for its Minecraft version and loader·Fabric1.5.51.5.5 · serverbackpacks-1.5.5+1.21.11.jar (main file)·15 May 2026PassedOur checks found nothing harmful in this file. Its code was read too.Open this file on ModrinthDownload · Stable · 706.2 KB
    26.1 to 26.1.226.1 to 26.1.2·Fabric1.5.51.5.5 · serverbackpacks-1.5.5+26.1.jar (main file)·15 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 652.8 KB
    1.21.11·Fabric1.5.41.5.4 · serverbackpacks-1.5.4+1.21.11.jar (main file)·10 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 706.1 KB
    26.1 to 26.1.226.1 to 26.1.2·Fabric1.5.41.5.4 · serverbackpacks-1.5.4+26.1.jar (main file)·10 May 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 652.8 KB
    26.1 to 26.1.226.1 to 26.1.2·Fabric1.5.31.5.3 · serverbackpacks-1.5.3+26.1.jar (main file)·7 Apr 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 650.6 KB
    26.1 to 26.1.126.1 to 26.1.1·Fabric1.5.21.5.2 · serverbackpacks-1.5.2+26.1.jar (main file)Beta·30 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Beta · 649.9 KB
    1.21.11·Fabric1.5.21.5.2 · serverbackpacks-1.5.2+1.21.11.jar (main file)·23 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 697.5 KB
    1.21.11·Fabric1.5.11.5.1 · serverbackpacks-1.5.1+1.21.11.jar (main file)·8 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 682.8 KB
    1.21.11·Fabric1.51.5 · serverbackpacks-1.5+1.21.11.jar (main file)·1 Mar 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 683.0 KB
    1.21.11·Fabric1.4.131.4.13 · serverbackpacks-1.4.13+1.21.11.jar (main file)·28 Feb 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 617.1 KB
    1.21.11·Fabric1.4.121.4.12 · serverbackpacks-1.4.12+1.21.11.jar (main file)·19 Feb 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 676.4 KB
    1.21.11·Fabric1.4.111.4.11 · serverbackpacks-1.4.11+1.21.11.jar (main file)·16 Feb 2026PassedOur checks found nothing harmful in this file.Open this file on ModrinthDownload · Stable · 676.0 KB
    1 to 20 of 14612345…8

    Quick fixes

    In the last 2 years, 18 releases needed a quick fix: a new release within 3 days to fix a problem. This lowers the grade by 3 points.

    See them, newest first

    Quick fixesReleases followed within 3 days by a new release that fixes a problem in them.18

    • 1.5.9+26.112 Jun 2026Changelog Fixed backpack not placing when having more than 1 trinket slot…
    • 1.5+1.21.111 Mar 2026Changelog Bugs Fixed not being able to apply stonecutter module. -- Note…
    • 1.3.8+1.21.63 Jul 2025Changelog Bugs Fix data loading issues that may occur in some cases
    • 1.3.5+1.21.61 Jul 2025Changelog Fix incorrectly using the wrong variable for accessing…
    • 1.3.3+1.21.628 Jun 2025Changelog Fixed /open not existing.
    • 1.3.3+1.21.528 Jun 2025Changelog Fixed /open not existing. Final release for 1.21.5 The…
    • 1.3.1+1.21.512 Jun 2025Changelog Bugs Fixed backpack having the same uuid on crafted.
    • 1.3-pre3+1.21.54 Jun 2025Changelog Bugs Fixed when you right click a backpack to open it in a inventory…
    • 1.3-pre2+1.21.53 Jun 2025Changelog Bugs Fixed not being able to place backpacks into a ender backpack…
    • 1.3-beta10+1.21.522 May 2025…not break when water flows to it. Fix log spam Fix creative pick block picking the wrong item…
    • 1.3-beta10.1+1.21.522 May 2025Changelog Fix crash -- If visuals are broken when equipping the…
    • 1.3-beta6+1.21.511 May 2025Changelog Fixed recipes.
    • 1.2.9+1.21.426 Mar 2025Fixed global backpack not saving.
    • 1.2.8+1.21.424 Mar 2025Fix [#28…
    • 1.2.7+1.21.423 Mar 2025Fix [#24…
    • 1.2.2+release4 Feb 2025Probably fixes some recipes and bugs.
    • 1.1.6.2+release4 Dec 2024Fixed backpacks not loading data.
    • 1.1.6.1+release2 Dec 2024Fixed tooltip.