Chunkmap vs Tectonicus

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 covers the Overworld, Nether, and End. The Windows CLI can render individual region files or combine rendered images into a single map. Its rendering modes include textures, heightmap, biomes, temperature, downfall, and inhabited views. The CLI is open source under the MIT license on GitHub, and the product is free. Chunkmap supports offline viewing and links to a Discord community. The project is labeled beta and under development, so it may not work as expected. The beta has only been tested with Minecraft 1.21.x worlds; modded worlds and chunks generated before 1.18 are unsupported. The project README also notes that Nether generation is slower than generation for the Overworld and End. The web version is for uploading and viewing region files, while the CLI provides rendering and map-merging options.

Tectonicus generates a detailed, zoomable map from a Minecraft Java world by building a 3D model and rendering map images. Its stated aim is to make maps resemble what players see in Minecraft. It runs on Linux, macOS, and Windows; maps can be viewed offline or served from a web server. Setup involves downloading a release, preparing an XML configuration file, and running the program from the command line with Java. Later runs using the same options are quicker after the initial render because only changed tiles are rendered. Players can filter which signs appear, and signs marked with #view can create first-person views with configurable height, angle, field of view, and nighttime rendering. Release 2.31 supports Minecraft 1.21 through 1.21.11, but not Minecraft 26.1. It also adds rectangular world subsets and arm64 LWJGL libraries for M-series Macs and possibly other ARM systems. Generated images can consume gigabytes of disk space depending on world size; WebP or JPG output and closestZoomSize can reduce storage use. Copper golem statues do not work, and shelves render only partially.