
SlotGlow
SlotGlow is a client-side Fabric mod that replaces Minecraft’s default hotbar selector with a fully customizable glowing highlight.
Screenshots






About this Mod
SlotGlow
SlotGlow is a client-side Fabric mod that replaces Minecraft’s default hotbar selector with a clean, customizable glowing highlight.
Instead of the normal gray selected-slot box, SlotGlow lets you create your own custom hotbar style with colors, glow effects, rainbow mode, opacity settings, outlines, animations, and more.
Features
- Custom glowing hotbar selector
- Replaces the default Minecraft selected-slot highlight
- Color presets like purple, blue, green, red, gold, pink, white, and more
- RGB color sliders for custom colors
- Rainbow mode
- Pulse animation
- Glow effect settings
- Outline thickness settings
- Inner outline and double outline options
- Corner mark effects
- Opacity controls
- Slot position offsets
- Hide highlight when the selected slot is empty
- Full Mod Menu configuration screen
- Helpful setting descriptions/tooltips
- Client-side only
Configuration
SlotGlow is configured through Mod Menu.
To change the settings, open Minecraft and go to:
Mods → SlotGlow → Configure
From there, you can customize the color, glow, rainbow mode, pulse speed, size, opacity, outline style, and more.
Requirements
- Fabric Loader
- Fabric API
- Mod Menu
- Cloth Config API
Compatibility
SlotGlow is client-side only, so it does not add blocks, items, mobs, or gameplay changes. It only changes how your hotbar looks on your screen.
Perfect for players who want a cleaner, cooler, and more personal Minecraft HUD.
Available Versions
How to Install SlotGlow on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "SlotGlow". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
SlotGlow server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.
Is SlotGlow compatible with fabric?
SlotGlow officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with SlotGlow – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if SlotGlow consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install SlotGlow with just one click on your server.