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Chunkmap
What it is
Chunkmap generates a top-down 2D map of Minecraft worlds from region (.mca) files. The web viewer accepts uploaded region files so users can inspect their own Overworld, Nether, and End worlds. Its Windows command-line interface can render individual region files or merge rendered images into one map. Rendering modes include textures, heightmap, biomes, temperature, downfall, and inhabited views. The CLI is open source on GitHub under the MIT license, and the project supports offline viewing. Chunkmap is free through its Open-source beta plan at no cost. The project is labeled beta and under development, with a warning that it may not work as expected. Compatibility has been tested only with Minecraft 1.21.x worlds; modded worlds and chunks created before 1.18 are unsupported. The README says Nether generation is slower than Overworld and End generation. The official site links to a Discord community.
For and against
For
- Maps Overworld, Nether, and End dimensions
- CLI offers multiple rendering modes
- Can merge rendered regions into one map
- Open source under the MIT license
- Supports offline viewing
Against
- Beta tested only with Minecraft 1.21.x
- Modded worlds are unsupported
- Pre-1.18 chunks are incompatible
- Nether generation is slower
The verdict
Chunkmap gives Minecraft users web and Windows tools for turning region files into dimensional maps. Its open-source beta status and narrow compatibility range should guide expectations.
Who it suits
Chunkmap suits Minecraft players who want browser or Windows maps from region files. It is also relevant to open-source users comfortable with beta software and current, unmodded worlds.
Plans and prices
Open-source beta
Under development · tested with Minecraft 1.21.x · modded worlds unsupported · chunks generated before 1.18 incompatible
Read 7 Oct 2026 · github.com
On the record
- Compatibility
- The beta has only been tested with Minecraft 1.21.x worlds; modded worlds and chunks generated before 1.18 are unsupported.github.com · read 7 Oct 2026
- Development status
- The website labels Chunkmap as beta and says it is under development and may not work as expected.chunkmap.voctal.dev · read 7 Oct 2026
- Maker
- Voctal describes itself as a team of developers creating applications and tools.voctal.dev · read 7 Oct 2026
- Map output
- The CLI can render individual .mca files and merge rendered images into a single map.github.com · read 7 Oct 2026
- Open source
- The CLI is open-source and available on GitHub under an MIT license.github.com · read 7 Oct 2026
- Performance limit
- The project README says Nether generation is slower than Overworld and End generation.github.com · read 7 Oct 2026
- Purpose
- Chunkmap generates a top-down 2D map of a Minecraft world from its region (.mca) files.chunkmap.voctal.dev · read 7 Oct 2026
- Rendering modes
- The CLI includes textures, heightmap, biomes, temperature, downfall, and inhabited rendering methods.github.com · read 7 Oct 2026
- Support
- The official site links to a Discord community.chunkmap.voctal.dev · read 7 Oct 2026
- Web viewer
- The web version lets users upload region (.mca) files to view their own worlds.chunkmap.voctal.dev · read 7 Oct 2026
- World dimensions
- It supports the Overworld, Nether, and End.chunkmap.voctal.dev · read 7 Oct 2026
