command block lengthener
Increases the command block character limit from 32,500 to 2,147,483,647 characters (the maximum possible integer limit). This is a client-side mod only…
I don't know my version or loader
Have you ever wanted to use an extremely long command? Maybe you wanted to create a complex NBT item or write a command that exceeds Minecraft's default command block limit.
Command Block Lengthener increases the command block text limit from 32,500 characters to 2,147,483,647 characters, the maximum value supported by a 32-bit signed integer.
This is a client-side mod and is intended for use with the standard Minecraft launcher. It has not been tested for server-side use and is not intended to function on multiplayer servers. Compatibility with custom clients (such as Lunar Client) is not guaranteed.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.4, 1.21.5, 1.21.6
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as commandblock-improver-1.0.0.jar — drop this file into the mods folder
- Download size: 32 KB
- Download link checked 7 Sept 2026 — working
These come from our own check of the pack file, not from the source page.