It starts with a folder
1. Copy your world. Your worlds live in %AppData%\.minecraft\saves on Windows. Copy the folder you want somewhere else and work on the copy.
2. Open it. Press Choose folder and paste that path into the address bar of the dialog. Or zip the world folder and drop the zip on the page.
3. That is it. The map draws itself. Everything else is optional.
Print your world
Select a landscape, set the scale in millimetres, export an STL. Terrain tiles come out with a flat base, print without supports, and the mesh is checked for open edges before you download it, so you know whether it is watertight before your slicer tells you.
Render your builds
Export as glTF and open it in Blender. Vertex colours come along, so it renders immediately without setting up a single texture. Add lighting and a sky and your survival base looks like an architectural visualisation.
Move builds between worlds
Export a schematic for WorldEdit or Litematica and paste it wherever you like. Or let the tool rebuild the region files directly and put them back for you.
Build a 3D model into your world
Load a .glb, .stl, .obj or .ply. Drag its footprint onto the map, resize it with the corners, and watch the block version appear as you go. Colours are matched against the block families you choose. Then walk around it before you commit to it.
One image per item, all four the same size. Show results, not the interface: the printed tile in someone’s hand, the Blender render, the model standing in terrain.
Built for real worlds, not demo worlds
Java 1.13 to the current version. Three different chunk formats under the hood, all read, all written back in the format they came from.
Multi-gigabyte worlds open as fast as small ones. Only the regions you look at are ever decoded.
Exports that your software will actually open. Neighbouring block faces are merged into single surfaces, which removes eighty to ninety-five percent of the triangles a naive exporter would produce. The difference between a forty megabyte STL and a three megabyte one.
It tells you when something did not work. Unknown blocks show up in magenta. Meshes report their open edges. Chunks that could not be processed are named. Nothing fails quietly.
Before you get excited
H2: What it is not
Not a mod. It does not change the game and does not run alongside it. It reads the files Minecraft saves.
Not Bedrock. Worlds from consoles, phones and the Windows store use a different storage format.
Not multiplayer. It reads and writes world files. Nobody plays inside it.
Not a full editor. Stairs and slabs come out as full cubes, and water is opaque in the 3D views.
Counter-intuitive but reliable: a short honest list of limitations converts better than none. It filters out the people who would bounce anyway and it earns trust from the ones who stay.
Open a world and see
It takes a copied folder and about a minute.
A desktop browser and a Minecraft Java Edition world from 1.13 or newer. Chrome and Edge support everything including writing changes back. Firefox and Safari read, browse and export.
Free for private, educational and other non-commercial use. Commercial licences are available on request.
Not an official Minecraft product. Not approved by or associated with Mojang or Microsoft.