MinedMap
MinedMap renders maps from Minecraft save games and provides a browser viewer for navigating them.
What MinedMap is
MinedMap renders maps from Minecraft save games and provides a browser viewer for navigating them. It works with unmodified Minecraft Java Edition versions 1.8 through 26.1 without requiring a mod. The renderer recreates tiles only for regions that changed, and parallel generation is available with the -j N option. The project says a 3 GB save can render in under five minutes single-threaded, with typical single-threaded memory use below 100 MB; multiple threads may use more. The viewer includes an illumination layer for nighttime maps and can display sign markers with clickable popups. Sign-layer generation is disabled by default but can be enabled and filtered. Tiles use lossless compression, with PNG as the default and WebP as an option that typically reduces file sizes by 20–25%. The browser viewer is based on Leaflet and must be served over HTTP; it cannot load map data from a file:// URI. MinedMap is free, MIT-licensed open source, with Linux and Windows binaries, source installation through Cargo, and Docker images for renderer and viewer deployments.
Good
- Supports Java Edition 1.8 through 26.1
- Incremental tile updates speed repeat renders
- Night illumination and clickable sign markers
- Parallel rendering is available
- Free MIT-licensed open source
Watch out
- Viewer requires an HTTP web server
- Cannot open map data from file://
- Sign-layer generation is off by default
- Multiple threads can increase memory use
Who it suits
It suits Minecraft Java players and server operators who need rendered, navigable save maps. It is also useful for users comfortable hosting a browser viewer over HTTP.
Verdict
MinedMap provides a capable map-rendering workflow with incremental updates, markers, and browser navigation. Its main setup requirement is serving the viewer through HTTP rather than opening files directly.
The facts
Each one read from MinedMap's own pages, with the date it was checked.
What it does
- Containers
- A release note says Docker images are available through GitHub Container Registry for the tile renderer and for a viewer with a web server.checked 8 Oct 2026
- Downloads
- The latest release page lists a viewer archive for all platforms and renderer binaries for 64-bit and 32-bit Windows and 64-bit Linux.checked 8 Oct 2026
- Hosting requirement
- The viewer requires an HTTP web server and cannot load generated map information when opened directly from a file URI.checked 8 Oct 2026
- Image formats
- Tiles use lossless compression and are PNG by default, with WebP available as an option that the project says typically reduces file size by 20–25%.checked 8 Oct 2026
- Incremental updates
- It recreates tiles only for regions that have changed, and the README says repeat runs rarely take more than a second or two.checked 8 Oct 2026
- Installation
- Binary builds are offered for Linux and Windows, and the generator can also be installed from source using Cargo with Rust 1.72.0 or newer.checked 8 Oct 2026
- License
- The repository identifies the project as MIT licensed.checked 8 Oct 2026
- Maintainer
- The GitHub account for the project identifies its maintainer as Nora Schiffer.checked 8 Oct 2026
- Memory use
- Single-threaded operation typically uses less than 100MB of RAM, though use may increase with multiple threads.checked 8 Oct 2026
- Minecraft compatibility
- The README says it works with unmodified Minecraft Java Edition versions 1.8 through 26.1, with no mod installation required.checked 8 Oct 2026
- Night view
- It includes an illumination layer that shows the world at night.checked 8 Oct 2026
- Parallel rendering
- The renderer supports parallel map generation using the -j N option.checked 8 Oct 2026
- Performance
- The README says a 3 GB save can be rendered in under five minutes single-threaded and typical single-threaded use is under 100 MB of RAM.checked 8 Oct 2026
- Purpose
- MinedMap renders maps from Minecraft save games and provides a browser viewer for displaying and navigating them.checked 8 Oct 2026
- Security
- GitHub reports that the project has no SECURITY.md security policy and no published security advisories.checked 8 Oct 2026
- Sign markers
- It can show sign markers with clickable popups, and sign-layer generation is disabled by default but can be enabled and filtered with options.checked 8 Oct 2026
- Tile formats
- Tiles use lossless compression; PNG is the default, and WebP is available as an option that the README says reduces typical file sizes by 20–25%.checked 8 Oct 2026
- Viewer and integration
- The browser viewer is based on Leaflet and its HTML and JavaScript files can be hosted on a web server alongside generated map data.checked 8 Oct 2026
- Viewer hosting
- The viewer must be served over HTTP because it cannot load map information from file:// URIs.checked 8 Oct 2026
Where it runs
- Web mapping library
- The browser viewer is based on Leaflet.checked 8 Oct 2026
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