mcweb - Minecraft worlds in the browser

1 · Open a world

Drop a world folder or .zip here

Dimension

"Folder with write access" lets mcweb put the changed region files back itself, so you never leave the tool. The browser refuses folders under AppData for that, so use a copy of the world somewhere else — which is where you should be experimenting anyway.

Pick the world folder itself, the one that holds level.dat. The browser will ask whether to upload the files. That is the standard wording of its dialog: everything is read locally, nothing is uploaded.

2 · View

Mode Slice height Y

Distance

The walkthrough shows static blocks only: no entities, no block updates. Click the view to capture the mouse.

Colours come from a built-in table. You can load the textures of your own resource pack or client.jar instead; the file is read locally.

3 · Selection

Hold shift (or the right mouse button) and drag a rectangle.

X from to Z from to

Vertical extent

Y from to Extra depth Fill caves

nothing selected

4 · Export

Schematic version Block size in mm Include plants and decoration

5 · Insert a 3D model

no model loaded

Size, position and orientation are set with the rectangle on the map.

Filling

Wall thickness Close pinholes

A surface voxelisation of a scan is one block thin and full of single-cell holes. Solid filling or a wall thickness of 2 gives a build you cannot see through.

Block palette

Dithering

Height Sink into ground Foundation Air above

Writing rebuilds the affected region files and packs them into a ZIP with a README. Extract it over a copy of your world, never over the original. To choose the folder for every download, switch on "Ask where to save each file" in your browser's download settings.

Drag to pan, scroll to zoom, shift-drag to select.