ModsJava
Bob's Hotbar Optimizer
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on ModrinthBob's Hotbar Optimizer removes the delay between switching hotbar slots that Minecraft has. This is done by making Minecraft process switching slots as soon as it receives the input. Normally, it waits until the next tick. Minecraft's slot processing works in a numerical order, from 1 - 9. If you're on slot 9, and want to switch to slot 6, you must wait for it to be processed in the next tick. This can be annoying in PvP as well as other situations.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- 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.
File checked by MCModsHub
- Ships as instant-hotbar-1.21.11.jar — drop this file into the mods folder
- Download size: 4 KB
- Download link checked 10 Oct 2026 — working
These come from our own check of the pack file, not from the source page.