VGSources / Best Minecraft World Editors / Minecraft World Trimmer
What it is
Minecraft World Trimmer is a free tool for clearing unused chunks from Minecraft Java worlds to reclaim storage. It identifies regions with little player activity and removes them, using a default threshold of 10 minutes (600 seconds) of player time per region. The -t option changes that threshold in seconds. By default, the program uses all available CPU cores; -c sets a custom core count. A live progress counter and -q, -u, and -v output options help track a run. Start it without command-line arguments to open an interactive terminal interface, which can find dimensions and world folders or use a Minecraft saves folder. It supports .mca region files and batch operations on Windows, macOS, and Linux. Windows users can download an executable ZIP from the GitHub release tab; macOS and Linux users need Python and source dependencies, including cursesplus and anvil-parser2. The README warns that trimming a new world could remove chunks containing player data.
Good, and not so good
- Free under the MIT License.
- Adjustable player-time threshold.
- Uses all CPU cores by default.
- Interactive terminal mode and batch operations.
- No binary for non-Windows systems.
- Requires Python and source dependencies on macOS and Linux.
- Running on a new world may destroy player data.
Who it suits
It suits Java players who need to reclaim space from established worlds and are comfortable running a terminal tool. Windows users can download an executable ZIP, while macOS and Linux users need Python and dependencies.
Minecraft World Trimmer offers adjustable, batch removal of low-usage regions, with an interactive terminal option. Its warning about possible loss of player data in a new world is important to heed.
Plans
- MIT LicenseFree of charge · provided as-is · no warrantyFree
As github.com lists them, read 1 Oct 2026.