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Minecraft World Trimmer

github.com

Free plan WindowsmacOSLinux
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Spec score 7.7 #17 of 35 in Minecraft World Editors

What it is

Minecraft World Trimmer removes low-usage regions from Minecraft Java worlds to reduce storage use. By default, it deletes regions with less than 10 minutes, or 600 seconds, of player time; the `-t` option changes that threshold in seconds. It uses all available CPU cores by default, with `-c` for a custom count. A live progress counter and `-q`, `-u`, and `-v` output options are available. Starting the program without command-line arguments opens an interactive terminal interface, which can discover dimensions and world folders or use a Minecraft saves folder. It supports `.mca` region files and batch operations on Linux, macOS, and Windows. Windows users can download a ZIP containing an executable from the GitHub release tab. On Linux and macOS, installation requires Python and source dependencies, including cursesplus and anvil-parser2. Version 1.1 added interactive mode and a Windows executable. The tool is free under the MIT License, provided as-is with no warranty. Its README warns that running it on a new world may delete chunks containing player data.

Spec sheet

Purpose
Minecraft World Trimmer clears unused chunks from Minecraft worlds to save storage space.Read 1 Oct 2026 · github.com
License
The software is released under the MIT License with permission to use, copy, modify, publish, distribute, sublicense, and sell it.Read 1 Oct 2026 · github.com
Default threshold
The default deletion threshold is 10 minutes, or 600 seconds, of player time per region.Read 1 Oct 2026 · github.com
Dependencies
The required libraries include cursesplus and anvil-parser2, with windows-curses additionally required for Windows interactive mode.Read 1 Oct 2026 · github.com
Interactive mode
Running without command-line arguments starts an interactive terminal UI for trimming worlds.Read 1 Oct 2026 · github.com
Multiprocessing
The program uses all available CPU cores by default and supports a custom core count with -c.Read 1 Oct 2026 · github.com
Non-Windows installation
There is no binary for non-Windows operating systems, so users must install Python and the source dependencies.Read 1 Oct 2026 · github.com
Progress controls
It provides a live progress counter and supports -q, -u, and -v output options.Read 1 Oct 2026 · github.com
Release features
Version 1.1 added interactive mode and a Windows EXE.Read 1 Oct 2026 · github.com
Safety limitation
The README warns never to run the trimmer on a new world because it may destroy chunks containing player data.Read 1 Oct 2026 · github.com
Support contact
The maker's GitHub profile lists [email protected] as a contact address.Read 1 Oct 2026 · github.com
Threshold control
Users can change the threshold with the -t option in seconds.Read 1 Oct 2026 · github.com
Trimming method
It finds low-usage regions and deletes them.Read 1 Oct 2026 · github.com
Windows download
Windows users can download a ZIP containing a Minecraft World Trimmer executable from the GitHub release tab.Read 1 Oct 2026 · github.com
World formats
Interactive mode supports 2011–2025 and 2026 world formats and can discover dimensions, world folders, or a Minecraft saves folder.Read 1 Oct 2026 · github.com

Plans and prices

MIT License Free Free of charge · provided as-is · no warranty Read 1 Oct 2026 · github.com

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Strong points and limits

Strong points

  • Adjusts the player-time threshold with `-t`.
  • Uses all CPU cores by default.
  • Includes an interactive terminal interface.
  • Supports batch operations on `.mca` region files.
  • Free under the MIT License.

Limits

  • Running it on a new world may destroy player-data chunks.
  • Linux and macOS require Python and source dependencies.
  • The software is provided as-is with no warranty.

Who it suits

It suits Minecraft Java players who want to remove low-usage world regions and are comfortable using a command-line or terminal interface. Windows users can download an executable; Linux and macOS users need Python and the source dependencies.

Verdict

Minecraft World Trimmer offers configurable region deletion, progress controls, and an interactive mode across three desktop platforms. The warning about possible loss of player-data chunks makes care with world selection essential.

Where Specifiction places it

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