How to Turn On Red Hitboxes in Your World

The pack only recolors the debug hitbox display. You still need to activate the pack and switch hitboxes on in game.

Activate the Pack

1. From the title screen or the pause menu, open Options and then Resource Packs.

2. Find Red Hitbox Resource Pack in the Available column on the left. If it is not listed, click Open Pack Folder and check that the pack is inside your resourcepacks folder. Then reopen the menu.

3. Click the arrow on the pack to move it into the Selected column on the right.

4.

Show the Hitboxes

1. Join any world or server.

2. Hold F3 and press B. Mobs, players and other entities now show bright red outlines around their hitboxes. An orange line marks eye height and a dark crimson line shows the direction each entity is looking.

3. Press F3 + B again to hide the hitboxes.

What Stays the Same

The pack keeps the normal black block selection outline. When you point at blocks to mine or build, the highlight looks exactly like vanilla. Only entity hitboxes change color, so you can leave the pack on all the time. Toggle the red lines only when you need them.