VoxelCleaner
by JasonFight
VoxelCleaner is a Fabric utility mod that adds commands for generating hollow rooms and clearing areas of blocks, with undo and redo support.
What it does
A single command creates a room of a chosen inner width, height and depth, with optional wall, floor and ceiling blocks, so the shell is built in one step rather than block by block. Area hollowing works the same way on an existing region, removing the interior while leaving the outer shell in place. Both operations record their changes in a history, and the undo and redo commands step backwards and forwards through those records.
The commands are aimed at map builders, tool creators and server administrators, who need to shape large volumes quickly. Protected blocks are left alone unless a force option is set, which removes them as well. A loot option sends the blocks that were removed into chests instead of dropping them on the ground. Limits on player use, history depth and size constraints are set in the configuration, whose constants are gathered in a single VoxelConfig.java file.
VoxelCleaner is for Fabric only and is published for 1.21.11 alone. Either side can run it, and neither needs it. The work is released under CC0 1.0 Universal and is open source, with public links to the source code and the issue tracker.
Key features
Room generation
Creates a rectangular room of set width, height and depth with one command, and fills the walls, floor and ceiling with chosen blocks.
Area hollowing
Clears the inside of a selected region and keeps the outer shell, so existing structures can be carved out.
Undo and redo history
Every generation or hollowing action is recorded, and the history can be stepped back and forward in order.
Protected block handling
Protected blocks stay in place by default, and an optional force setting removes them when needed.
Loot collection
An optional loot setting places removed blocks and their drops into chests rather than scattering them.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Build undo is a Fabric mod for 1.21.11 that is not open source and is licensed as All rights reserved, and it works on the client and server together. Pocket Dimension also needs both sides for 1.21.11, and it is not open source, released under the Creative Commons Attribution Non Commercial 4.0 license. Custom World Height+ is a server-side only, CC0 1.0 Universal mod covering 1.21.6 – 26.3 that is not open source. Among these, only VoxelCleaner runs on either side alone.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| VoxelCleaner | Fabric | 1.21.11 | Client or server, optional | 2025-12-28 |
| Build undo | Fabric | 1.21.11 | Client and server | 2026-05-21 |
| Pocket Dimension | Fabric | 1.21.11 | Client and server | 2026-07-04 |
| Custom World Height+ | Fabric | 1.21.6 – 26.3 | Server-side only | 2026-10-12 |
Questions
Does VoxelCleaner need a second mod?
Can it run only on a server?
Which Minecraft version is supported?
In the catalog
VoxelCleaner is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 19,862 mods support Minecraft 1.21.11.
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What the author says
VoxelCleaner is a Minecraft mod designed to provide powerful voxel-based editing capabilities via in-game commands. With features like room generation, area hollowing, history tracking (undo/redo), loot management, and block protection, it is an essential tool for creators, map builders, and server admins…
Official listing
- Modrinth page
- modrinth.com/mod/voxelcleaner
- Owner
- JasonFight
- Published
- 2025-12-13
- Updated on Modrinth
- 2025-12-28
- Facts verified
- 2026-10-15