Bossbar Config
by DriftSythe
Bossbar Config lets players resize and move the boss bar on the HUD, with the changes applied from a config screen or quick commands.
What it does
The boss bar can be scaled up or down between 0.1x and 3.0x, and moved with X and Y offsets. A negative X value shifts it left and a positive one shifts it right, so it can sit wherever the player prefers on the screen. A reset option restores the default size and position at any time.
Changes can be made through the Mod Menu config screen, which is optional, or through commands that apply a quick adjustment without opening a menu. The mod runs on Fabric and needs Fabric API. Only the client needs it, so it is safe to use on a server without it being installed there. Files are published for 1.21.10 and 1.21.11, and the latest is 1.0.0 for 1.21.11, released under the MIT License. The code is not open source under a standard open-source model and is not declared as such.
Key features
Boss bar scaling
The bar can be made smaller or larger, from 0.1x up to 3.0x of its default size.
Position offsets
X and Y offsets move the bar anywhere on the HUD, so it no longer has to stay at the top center.
Mod Menu config screen
A config screen opens through Mod Menu for players who prefer visual settings over typed values.
Quick commands and reset
Commands adjust scale and position without opening a menu, and a reset command restores the defaults.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Moving the bar out of the way
Players who keep a minimap or chat in the top center can shift the boss bar to another part of the screen.
Who it’s for: Players who fight bosses on a Fabric client and want the boss bar at a different size or position. Server owners do not need to install it.
How it compares
Bossbar Toggle by lukasabbe is client-side only and open source under the MIT License, built for 26.2. BossBarScale is client-side only under the MIT License, built for 1.21.8, and is not open source. BossBar Toggle by its own author is client-side only, not open source, under All rights reserved, and covers 1.19.3 – 1.21.11. Bossbar Config supports 1.21.10 and 1.21.11 with scaling and offsets together.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Bossbar Config | Fabric | 1.21.10 – 1.21.11 | Client-side only | 2026-03-25 |
| Bossbar Toggle | Fabric | 26.2 | Client-side only | 2026-08-19 |
| BossBarScale | Fabric | 1.21.8 | Client-side only | 2025-09-27 |
| BossBar Toggle | Fabric | 1.19.3 – 1.21.11 | Client-side only | 2026-03-05 |
Questions
Does Bossbar Config need Fabric API?
Does Bossbar Config have to be installed on the server?
Is the config screen required?
Which versions does Bossbar Config support?
In the catalog
Bossbar Config is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from DriftSythe
Similar mods
What the author says
A simple client-side mod that lets you resize and reposition the boss bar HUD to wherever you want on your screen. Features - Scale the boss bar up or down (0.1x to 3.0x) - Move it around using X & Y offsets - Mod Menu config screen - Commands for quick changes without opening the menu
Official listing
- Modrinth page
- modrinth.com/mod/bossbar-config
- Owner
- DriftSythe
- Published
- 2026-03-25
- Updated on Modrinth
- 2026-03-25
- Facts verified
- 2026-10-15