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Minecraft World Trimmer

Minecraft World Trimmer is a free tool for reclaiming storage by removing low-usage regions from Minecraft Java worlds.

Place
#13 of 35
Score
6.1
Minecraft World Trimmer's website

What Minecraft World Trimmer is

Minecraft World Trimmer is a free tool for reclaiming storage by removing low-usage regions from Minecraft Java worlds. By default, it deletes regions with less than 10 minutes (600 seconds) of player time; the `-t` option lets users set a different threshold in seconds. It uses all available CPU cores unless a custom count is supplied with `-c`, and provides a live progress counter plus `-q`, `-u`, and `-v` output options. Running it without arguments opens an interactive terminal interface that can locate dimensions and world folders or work from a Minecraft saves folder. It supports `.mca` region files and batch operations on Linux, macOS, and Windows. Windows users can download an executable ZIP from the GitHub release tab. On macOS and Linux, installation requires Python and source dependencies, including cursesplus and anvil-parser2. The README warns that using it on a new world could remove chunks containing player data.

Good

  • Free under the MIT License.
  • Adjustable region threshold with `-t`.
  • Uses all available CPU cores by default.
  • Interactive terminal mode and batch operations.
  • Available for Linux, macOS, and Windows.

Watch out

  • Non-Windows users must install Python and dependencies.
  • The README warns against running it on new worlds.
  • Windows interactive mode requires windows-curses.

Who it suits

It suits Minecraft Java players who want to clear low-activity regions from existing worlds and are comfortable with command-line tools or an interactive terminal interface. Windows users can download an executable, while macOS and Linux users need Python and the source dependencies.

Verdict

Minecraft World Trimmer offers configurable cleanup for Minecraft Java `.mca` worlds, with both command-line controls and an interactive mode. Its warning about potential player-data loss on new worlds is important to heed before trimming.

Plans and prices

From Minecraft World Trimmer's own pricing page, checked 1 Oct 2026.

All about pricing
PlanPriceWhat it gives you
MIT LicenseFreeFree of charge · provided as-is · no warranty

The facts

Each one read from Minecraft World Trimmer's own pages, with the date it was checked.

What it does

Default threshold
The default deletion threshold is 10 minutes, or 600 seconds, of player time per region.checked 1 Oct 2026
Dependencies
The required libraries include cursesplus and anvil-parser2, with windows-curses additionally required for Windows interactive mode.checked 1 Oct 2026
Interactive mode
Running without command-line arguments starts an interactive terminal UI for trimming worlds.checked 1 Oct 2026
License
The software is released under the MIT License with permission to use, copy, modify, publish, distribute, sublicense, and sell it.checked 1 Oct 2026
Multiprocessing
The program uses all available CPU cores by default and supports a custom core count with -c.checked 1 Oct 2026
Progress controls
It provides a live progress counter and supports -q, -u, and -v output options.checked 1 Oct 2026
Purpose
Minecraft World Trimmer clears unused chunks from Minecraft worlds to save storage space.checked 1 Oct 2026
Release features
Version 1.1 added interactive mode and a Windows EXE.checked 1 Oct 2026
Safety limitation
The README warns never to run the trimmer on a new world because it may destroy chunks containing player data.checked 1 Oct 2026
Support contact
The maker's GitHub profile lists [email protected] as a contact address.checked 1 Oct 2026
Threshold control
Users can change the threshold with the -t option in seconds.checked 1 Oct 2026
Trimming method
It finds low-usage regions and deletes them.checked 1 Oct 2026
World formats
Interactive mode supports 2011–2025 and 2026 world formats and can discover dimensions, world folders, or a Minecraft saves folder.checked 1 Oct 2026

Where it runs

Non-Windows installation
There is no binary for non-Windows operating systems, so users must install Python and the source dependencies.checked 1 Oct 2026
Windows download
Windows users can download a ZIP containing a Minecraft World Trimmer executable from the GitHub release tab.checked 1 Oct 2026

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