Chunkmap
Chunkmap generates top-down 2D maps of Minecraft worlds from region (.mca) files.
What Chunkmap is
Chunkmap generates top-down 2D maps of Minecraft worlds from region (.mca) files. Its web viewer lets users upload their own region files, and it supports the Overworld, Nether, and End. The CLI can render individual region files or combine rendered images into a single map. Available rendering methods include textures, heightmap, biomes, temperature, downfall, and inhabited views. The CLI is open source under the MIT license on GitHub, and the project links to a Discord community. Chunkmap is available for web and Windows and supports offline viewing. The Open-source beta plan costs nothing. The project is still under development and the site warns it may not work as expected. Compatibility is limited: the beta has only been tested with Minecraft 1.21.x worlds, modded worlds are unsupported, and chunks generated before 1.18 are incompatible. The project README also notes that Nether map generation takes longer than generation for the Overworld or End.
Good
- Free to use.
- Maps the Overworld, Nether, and End.
- CLI offers six rendering methods.
- CLI is MIT-licensed and open source.
Watch out
- Beta may not work as expected.
- Modded worlds are unsupported.
- Chunks generated before 1.18 are incompatible.
- Nether generation is slower.
Who it suits
Chunkmap suits Minecraft players who want a top-down view of their world from region files. It is a beta project, so users should account for its stated compatibility limits.
Verdict
Chunkmap offers a free way to render Minecraft region files into maps, with web viewing and a CLI. Its beta status and compatibility limits are important considerations.
Plans and prices
From Chunkmap's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Open-source beta | Free | Under development · tested with Minecraft 1.21.x · modded worlds unsupported · chunks generated before 1.18 incompatible |
The facts
Each one read from Chunkmap's own pages, with the date it was checked.
What it does
- Compatibility
- The beta has only been tested with Minecraft 1.21.x worlds; modded worlds and chunks generated before 1.18 are unsupported.checked 7 Oct 2026
- Development status
- The website labels Chunkmap as beta and says it is under development and may not work as expected.checked 7 Oct 2026
- Map output
- The CLI can render individual .mca files and merge rendered images into a single map.checked 7 Oct 2026
- Open source
- The CLI is open-source and available on GitHub under an MIT license.checked 7 Oct 2026
- Performance limit
- The project README says Nether generation is slower than Overworld and End generation.checked 7 Oct 2026
- Purpose
- Chunkmap generates a top-down 2D map of a Minecraft world from its region (.mca) files.checked 7 Oct 2026
- Rendering modes
- The CLI includes textures, heightmap, biomes, temperature, downfall, and inhabited rendering methods.checked 7 Oct 2026
- Support
- The official site links to a Discord community.checked 7 Oct 2026
- Web viewer
- The web version lets users upload region (.mca) files to view their own worlds.checked 7 Oct 2026
- World dimensions
- It supports the Overworld, Nether, and End.checked 7 Oct 2026
The company
- Maker
- Voctal describes itself as a team of developers creating applications and tools.checked 7 Oct 2026
Where it runs
- Platforms
- The project provides a web viewer and a command-line interface, with a Windows-targeted CLI build documented in the README.checked 7 Oct 2026
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