ModsJava
CommandF3
A lightweight mod adding a /f3 command to toggle the debug screen, show hitboxes, and reload chunks. Perfect for macOS users!.
⬇ Download on ModrinthCommandF3
A simple client-side mod that adds an /f3 command to the game.
I made this because playing Minecraft on a Mac or a compact keyboard means streaching your finger a killometer just to check coordinates. And the keybinds like Fn + F3 + B are annoying, and some keyboards don't even have a function row. This mod fixes that by moving those keys into your chat.
What it does:
/f3– Toggles the full debug menu overlay./f3 hitboxes– Shows or hides entity hitbox borders./f3 reload– Forces a clean reload of all visible world chunks.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.1, 1.21.2, 1.21.3
- 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.
Verified by MCModsHub
- Ships as f3command-1.1.0.jar — drop this file into the mods folder
- Download size: 28 KB
- Download link checked 8 Sept 2026 — working
These come from our own check of the pack file, not from the source page.