No Hotbar Swap
by mercuri
No Hotbar Swap stops the number keys from switching hotbar slots by accident, which matters when a stray press swaps a sword out for a stack of cobblestone at the wrong moment.
What it does
Number-key slot switching is turned off, so pressing the number keys no longer changes the selected hotbar slot. The mod addresses one input behavior and leaves the rest of the game alone, with no new items, blocks or changes to gameplay. A config option can turn the disabling off, and a modifier key can be set to allow swapping temporarily while it is held.
Only the client needs the mod, so a server running vanilla behavior can be joined without installing anything. Installation needs Fabric API on either loader. Cloth Config API and Mod Menu are optional and add a settings screen for the config. The mod is released under the MIT License and is open source, with source code and an issue tracker public, and files exist for Fabric and NeoForge for 1.21.1.
Key features
Number keys disabled
Pressing the number keys no longer changes the selected hotbar slot, so an accidental press cannot switch items mid-fight.
Config toggle
A config option lets the player turn the disabling on or off without removing the mod.
Modifier key override
A modifier key can be held to allow number-key swapping for a moment, while the default stays locked.
Narrow scope
The mod changes only how number-key input is handled and adds no other gameplay content.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Optional 2
Use cases
Fast combat play
Players who bump a number key during a fight keep their weapon selected, because the swap does not happen.
Building with fixed slots
Builders who keep blocks in set hotbar positions avoid losing their layout to a stray keypress.
Who it’s for: Players who often swap items by accident and want the number keys to stop changing slots. Anyone who still wants the vanilla behavior can turn it back on in the config or hold the modifier key.
How it compares
Hotbar Quickswap is a Fabric mod for 1.21.10 – 1.21.11, client-side only and open source under the CC0 1.0 Universal license, so it targets a different range. Simple-overhand-swap is a client-side Fabric mod for 1.21 – 1.21.10 under the MIT License, also open source. Inventory Vertical Swap is a NeoForge mod for 1.21.1 under the MIT License, but it is not open source.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| No Hotbar Swap | Fabric and NeoForge | 1.21.1 | Client-side only | 2026-04-03 |
| Hotbar Quickswap | Fabric | 1.21.10 – 1.21.11 | Client-side only | 2025-12-24 |
| Simple-overhand-swap | Fabric | 1.21 – 1.21.10 | Client-side only | 2025-10-20 |
| Inventory Vertical Swap | NeoForge | 1.21.1 | Client-side only | 2026-05-19 |
Questions
Does No Hotbar Swap need Fabric API?
Does the server need No Hotbar Swap?
Can the number-key swapping be turned back on?
Is the mod available for versions other than 1.21.1?
In the catalog
No Hotbar Swap is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
A small, focused Minecraft mod that disables accidental number-key hotbar swapping. Prevents the player from unintentionally switching hotbar slots—simple as that.
Official listing
- Modrinth page
- modrinth.com/mod/no-hotbar-swap
- Owner
- mercuri
- Published
- 2026-04-03
- Updated on Modrinth
- 2026-04-03
- Facts verified
- 2026-10-15