ModsFinder

CommandF3

by sohaan.m

CommandF3 is a Fabric client mod that adds a command toggle to the F3 debug screen, with options such as showing hitboxes and reloading chunks.

FabricClient-side onlyMIT License1.21.1 – 1.21.11

What it does

Pressing F3 opens the debug overlay in vanilla Minecraft. CommandF3 adds a command-based toggle so the overlay's features can be switched on and off from the chat line, including hitbox display and chunk reloading. Only the client needs the mod, and servers run without it, since it changes nothing on the server side. It is released under the MIT License and is not open source. Files are published for 11 release versions, the newest being 1.21.11.

Key features

  1. F3 command toggle

    Debug screen options are switched with a command typed in chat, rather than only through the F3 key.

  2. Hitbox display

    The toggle can show entity hitboxes on screen, which helps when checking collision or positioning.

  3. Chunk reloading

    A command reloads chunks on the client, a shortcut that otherwise needs the debug screen's own key combinations.

Compatibility

Latest build for each game version and loader.

1.21.x11 of 11 versions with builds
1.21.111.1.0
1.21.101.1.0
1.21.91.1.0
1.21.81.1.0
1.21.71.1.0
1.21.61.1.0
1.21.51.1.0
1.21.41.1.0
1.21.31.1.0
1.21.21.1.0
1.21.11.1.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

Only Elytra Hitbox is a client-side Fabric mod under CC0 1.0 Universal, covering the same span of versions but focused on elytra hitboxes rather than the F3 screen. Better Hitboxes is client-side on Fabric for 1.21 – 1.21.8 and is All rights reserved. CommandF3 is MIT licensed and is not open source.

ModLoadersGame versionsEnvironmentUpdated
CommandF3Fabric1.21.1 – 1.21.11Client-side only2026-06-02
Only Elytra HitboxFabric1.21.1 – 1.21.11Client-side only2025-12-29
Better HitboxesFabric1.21 – 1.21.8Client-side only2025-09-13

Questions

Does CommandF3 need to be installed on the server?

No. It is installed on the player's side alone, so servers need nothing.

Which Minecraft versions does CommandF3 support?

Files exist for 11 release versions, and the latest Fabric file is 1.1.0 for 1.21.11.

In the catalog

CommandF3 is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.

Optimization mods3,545Fabric modsMods for 1.21.1119,862

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HotbarSort1.21.11

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What the author says

A simple client-side mod that adds an /f3 command to the game.
sohaan.m, on the Modrinth page

Official listing

Owner
sohaan.m
Published
2026-05-21
Updated on Modrinth
2026-06-02
Facts verified
2026-10-15

Tags

Game mechanicsOptimizationUtility
Open on ModrinthCompare