StackUpper
ModIncrease item stack with custom rule support.
B88/ 100
Why gradeB
How grades workStrengths
Points lost
- No release in 6 months−7 points
- Under 5 million downloads−2 points
All 11 criteria
Maintenance
4 points lost23 / 27Last releaseHow long ago the newest file came out, or an existing file was marked as working on a new Minecraft version.6 months ago (16 Apr 2026) 8 / 12Supports 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. 62% of the 995 popular NeoForge mods updated in the last 6 months also have files for 26.1.2. Latest Minecraft: 26.3. 9 / 9Regular releasesIn how many of the last 24 months a new file came out. Full points at 8 months.Releases in 11 of the last 24 months 6 / 6Stability
Full points22 / 22Removed 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 7 modpacks with two or more versions removed it in a later one (29%) 10 / 10Quick 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 / 7Known 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 / 5Transparency
Full points10 / 10Source codeWhether the project page links to its source code, so anyone can read what it does.GitHub · MaiKokain/StackUpper 7 / 7Place to report problemsWhether the project page links to a place where players can report problems: an issue tracker.GitHub issues · MaiKokain/StackUpper 3 / 3Popularity
2 points lost2 / 4DownloadsDownloads on Modrinth and CurseForge. Full points from 5 million.16,678 2 / 4Track record
3 points lost5 / 8AgeHow long the project has existed. It counts less when no new file came out recently.2.3 years, 35 releases 5 / 8Security
PassedFile checksThis check adds no points. It can only take points away.Our checks found nothing harmful in all 6 latest files for recent Minecraft versions. See Security
Total88 / 100
62.2 of the 71 points that apply = 88 out of 100. The points above are rounded to whole numbers.
About
StackUpper lets players change item stack sizes, with custom rules able to set them as high as 2,147,483,647. Rules are written in StackUpper’s scripting language and can target items by exact ID, regular-expression ID, or tag, or use comparisons against an item’s current stack size. For example, a rule can set oak logs to stacks of 50, multiply the stack size of items matching a leaves pattern by five, or add 64 to items with the meat tag. Rules support setting, multiplying, adding, subtracting, dividing, and exponentiating stack sizes, alongside comparison operators for conditional matching.
Written from Modrinth . How we write it
In-game changes
Changes the game's code in 3 areas: Inventory and itemsChanges 6 game code files in this area: items, chests and other containers, crafting and enchanting., User interfaceChanges 1 game code file in this area: menus, screens, tooltips, the chat window and the in-game overlay. and Mobs and their behaviorChanges 1 game code file in this area: mobs, animals, villagers, projectiles and how they move and act..
Adds no new blocks, items or other content.
Keeps all of vanilla Minecraft's textures, models and sounds.
Details
- Creator
- Maikokain
- License
- GNU General Public License v3.0 only
- Downloads
- 17K
- Created
- 21 Jul 2024
- Official pages
- Modrinth , CurseForge
- Links
- Source code , Issues , Wiki , 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.
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
- 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.9 latest files: the newest file for each Minecraft version and loader. The answer above is about the 6 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.
- Modrinth and CurseForgeA release with a different file on Modrinth and on CurseForge, whose code is not the same. Each file is checked on its own. Nothing is blocked.Minecraft 1.21 to 1.21.4 · NeoForge · release 2.0.3 · 10 Jan 2025: Modrinthcode differs in 4 releases
stackupper-1.21.1-2.0.3-all.jar, CurseForgestackupper-1.21.3-2.0.3.jar. 4 classes changed, 215 classes only in the CurseForge file:StackUpperCommand,ClientGuiGraphics,ItemStackMixin,SULangListener,antlr4-runtime: ANTLRErrorListener(CurseForge only),antlr4-runtime: ANTLRErrorStrategy(CurseForge only),antlr4-runtime: ANTLRFileStream(CurseForge only),antlr4-runtime: ANTLRInputStream(CurseForge only),antlr4-runtime: BailErrorStrategy(CurseForge only),antlr4-runtime: BaseErrorListener(CurseForge only),antlr4-runtime: BufferedTokenStream(CurseForge only),antlr4-runtime: CharStream(CurseForge only) and 207 more.Minecraft 1.21 to 1.21.4 · NeoForge · release 2.0.2 · 28 Dec 2024: Modrinthstackupper-1.21.1-2.0.2-all.jar, CurseForgestackupper-1.21.3-2.0.2.jar. 4 classes changed, 215 classes only in the CurseForge file:StackUpperCommand,ClientGuiGraphics,ItemStackMixin,SULangListener,antlr4-runtime: ANTLRErrorListener(CurseForge only),antlr4-runtime: ANTLRErrorStrategy(CurseForge only),antlr4-runtime: ANTLRFileStream(CurseForge only),antlr4-runtime: ANTLRInputStream(CurseForge only),antlr4-runtime: BailErrorStrategy(CurseForge only),antlr4-runtime: BaseErrorListener(CurseForge only),antlr4-runtime: BufferedTokenStream(CurseForge only),antlr4-runtime: CharStream(CurseForge only) and 207 more.Minecraft 1.21 to 1.21.3 · NeoForge · release 2.0.1 · 22 Nov 2024: Modrinthstackupper-1.21.1-2.0.1-all.jar, CurseForgestackupper-1.21.1-2.0.1.jar. 503 classes only in the Modrinth file:SimpleLoggerWrapper: MyLogger(Modrinth only),SimpleLoggerWrapper: MyLoggerFactory$1(Modrinth only),SimpleLoggerWrapper: MyLoggerFactory$2(Modrinth only),SimpleLoggerWrapper: MyLoggerFactory$3(Modrinth only),SimpleLoggerWrapper: MyLoggerFactory(Modrinth only),xstream: InitializationException(Modrinth only),xstream: MarshallingStrategy(Modrinth only),xstream: XStream$1(Modrinth only),xstream: XStream$2(Modrinth only),xstream: XStream$3(Modrinth only),xstream: XStream$4(Modrinth only),xstream: XStream$InitializationException(Modrinth only) and 491 more.Minecraft 1.21 to 1.21.1 · NeoForge · release 2.0.0 · 21 Nov 2024: Modrinthstackupper-1.21.1-2.0.0-all.jar, CurseForgestackupper-1.21.1-2.0.0.jar. 503 classes only in the Modrinth file:SimpleLoggerWrapper: MyLogger(Modrinth only),SimpleLoggerWrapper: MyLoggerFactory$1(Modrinth only),SimpleLoggerWrapper: MyLoggerFactory$2(Modrinth only),SimpleLoggerWrapper: MyLoggerFactory$3(Modrinth only),SimpleLoggerWrapper: MyLoggerFactory(Modrinth only),xstream: InitializationException(Modrinth only),xstream: MarshallingStrategy(Modrinth only),xstream: XStream$1(Modrinth only),xstream: XStream$2(Modrinth only),xstream: XStream$3(Modrinth only),xstream: XStream$4(Modrinth only),xstream: XStream$InitializationException(Modrinth only) and 491 more.
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
- 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 6 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 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
- 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 descriptionChangelogs 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
- 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 file269 code files read
Compatibility
See all 35 filesNeoForge
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 in your game and on the server, or you cannot join.
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.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 itModpacks that include StackUpper in at least one of their versions, most downloaded first.
Matrix of Materia25K downloadslast version with it 9 May 2026
FIREBEAR'S Adventure990 downloadslast version with it 14 Jul 2026
create aeronautics and more514 downloadslast version with it 24 Jun 2026
BWB Pack374 downloadslast version with it 18 Jun 2026
SpudCraft315 downloadslast version with it 29 Jan 2026
TBMB Aero Create208 downloadslast version with it 6 May 2026
Zoubi Survival136 downloadslast version with it 8 Jan 2026Latest 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.
26.1 to 26.1.2NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.11NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.9 to 1.21.10NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.6 to 1.21.8NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.3 to 1.21.5NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21 to 1.21.1NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
Older Minecraft versions
1.21.3NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.2NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.20.5 to 1.20.6NeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
35 releases
26.1 to 26.1.2The latest file for its Minecraft version and loaderNeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.9 to 1.21.10The latest file for its Minecraft version and loaderNeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21 to 1.21.1The latest file for its Minecraft version and loaderNeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.6 to 1.21.8The latest file for its Minecraft version and loaderNeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.3 to 1.21.5The latest file for its Minecraft version and loaderNeoForgePassedOur checks found nothing harmful in this file. Its code was read too.
1.21.9 to 1.21.11The latest file for its Minecraft version and loaderNeoForgePassedOur checks found nothing harmful in this file. Its code was read too.