Force Lowercase Commands
by V
Force Lowercase Commands makes typed commands with capital letters run in lowercase, so a stray Caps Lock does not break a command in chat.
What it does
Since Minecraft 1.19.1, Bukkit and its forks such as Spigot, Paper and Purpur handle player commands case-sensitively, which means commands added by plugins can stop working when a capital letter is typed. This Fabric and Quilt mod works around that change on the client: when a message starts as a command, it swaps every uppercase letter in the command name for a lowercase one before sending it. Command arguments are left untouched, so values typed with capitals still arrive unchanged.
Because the change happens on the client, the mod is client-side only. A player installs it alone, and servers and single-player worlds need nothing extra. It is released under the MIT License and is not open source. Builds cover 1.19.1 – 1.21.8 across 20 release versions, with Fabric files and a Quilt file for 1.20.1. The newest Fabric file is 1.1.0 for 1.21.8, published on 2024-04-23.
Key features
Lowercase command names
Uppercase letters in the command name are converted to lowercase before the command is sent to the server.
Arguments kept intact
Only the command name changes, so arguments typed with capital letters reach the server exactly as written.
Client-side operation
Players need the mod alone, and the server can be any Minecraft server, including vanilla.
Quick typing
Commands typed quickly, including with Caps Lock on by accident, still run without retyping.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x9 of 9 versions with builds
1.20.x7 of 7 versions with builds
1.19.x4 of 4 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Accidental Caps Lock
A player with Caps Lock on can type a command in chat without first turning it off.
Plugin commands on Paper
Players on Paper, Spigot or Purpur servers can use plugin commands that expect lowercase names.
Who it’s for: Players who join Bukkit-based servers and type commands by hand, and players who type fast or often use Caps Lock.
How it compares
Force Lowercase Commands is client-side only, under the MIT License, and not open source, with files for 1.19.1 – 1.21.8 on Fabric and Quilt. fabric Force Lowercase is also client-side, open source under the MIT License, and covers 1.19.4 – 26.3 on Fabric alone. NoCapsLock is client-side, open source under the MIT License, and covers 1.21.5 – 1.21.11 on Fabric.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Force Lowercase Commands | Fabric and Quilt | 1.19.1 – 1.21.8 | Client-side only | 2024-04-23 |
| fabric Force Lowercase | Fabric | 1.19.4 – 26.3 | Client-side only | 2026-03-28 |
| NoCapsLock | Fabric | 1.21.5 – 1.21.11 | Client-side only | 2025-12-10 |
Questions
Does Force Lowercase Commands need Fabric API?
Does the server need the mod?
Does the mod change command arguments?
In the catalog
Force Lowercase Commands is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 17,695 mods support Minecraft 1.21.8.
Similar mods
What the author says
Forces Minecraft client to use lowercase letters in commands. After Minecraft 1.19.1 update, Bukkit changed player commands to be handled with Minecraft's command system which means that commands added by plugins can no longer be used case-insensitively on servers such as Bukkit, Spigot, Paper, Purpur, or other…
Official listing
- Modrinth page
- modrinth.com/mod/force-lowercase-commands
- Owner
- V
- Published
- 2022-12-08
- Updated on Modrinth
- 2024-04-23
- Facts verified
- 2026-10-15