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MCStacker for Minecraft Java Edition 1.21

Welcome to MCStacker for Minecraft 1.21. This website will help you generate many commands for Minecraft Java Edition. The syntax for commands containing items changed significantly in recent versions. Fortuanately, MCStacker can convert most of your 1.20.4 style commands and output them in the new format. Most of the specific options available for entities, items and blocks can be generated with this tool. MCStacker began in 2014 and many new features have been added regularly ever since. I continue to implement new functionality and keep it up-to-date to the latest version of Minecraft.

MCStacker Offline Development of this site relies on your ongoing support. You can help support me by purchasing the Installable Deluxe Edition of MCStacker. Or you could support me on Patreon. That also gets you the offline edition. Or if you want to, an occasional donation on Ko-fi is also appreciated.

There are key differences in the three flavors or MCStacker. Before purchasing, please make sure you're getting the edition which best meets your needs. Offline Edition Deluxe Edition
Minecraft Versions Supported 1.12 and up 1.13 and up 1.20 and up
Works Offline No Yes Yes
How to get it and how much does it cost? It's free and you are looking at it right now. Become a Patreon supporter. $1 or more per/month
Comes free with Deluxe Edition
One time purchase of $10 or more if it's worth it to you.
You get it once your Patreon lifetime support reaches $10
What is it and what features does each edition get you? It's a website containing a "Saved Commands" section where users can store and share their command creations. A zip file containing html documents and everything else needed to run MCStacker when you don't currently have an internet connection An installable edition of MCStacker for Windows, Mac or Linux. It has all the same commands as the online edition plus some exclusive features: Command history, Command List Import/Export (mcfunction, txt, whatever), Import/Output Diff Checker and Lifetime updates.
Is there advertising? Yes but not for Patreon supporters No No

As always requests, comments, feedback and bug reports are welcome at or on the MCStacker Discord Server

Matt / PyroStunts

Check out the Interactive NPC Generator Support MCStacker Development on Patreon
Play on the Weaponized Creeper Wars Server Check out Minecraft Mural Generator

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Disable Output   Refresh Copy
Import CommandX ImportClear
Command Prefix ?
Update Prefix on Import?
Namespace ?
Update Namespace on Import?
Remove Command Slash?
Load Item User Interface?
Warn on Close/Reload?
Website Theme?
Item/Block List Language?
Item/Block List Sort Order?