Geo-Data Extraction Tool

Explore maps. Extract data.

A fullscreen 3D map viewer with building extrusions, terrain, contour lines, and one-click export to GeoJSON, OBJ, DXF, and GeoTIFF — all in your browser.

3D Visualization

3D buildings and terrain at your fingertips.

Toggle extruded buildings from OpenStreetMap data and realistic terrain elevation with a single click. The map responds instantly — no reloads, no page transitions.

  • OSM building footprints with heights
  • Mapterhorn DEM terrain tiles (free)
  • Automatic hillshading
Thematic Layers

Contours, waterways, and more.

Enable zoom-adaptive contour lines with elevation labels, render waterways and coastline from OSM, and switch between Voyager, Dark Matter, and Satellite basemaps.

  • Zoom-adaptive contour thresholds
  • Theme-reactive layer colors
  • Three map styles with auto dark mode
Draw & Measure

Draw areas, measure distances.

Define areas of interest with a bounding box or draw custom shapes (points, lines, rectangles, circles, polygons). Measure distances with the rubber-band ruler tool — live labels, real-time updates.

  • Bounding box with resize and drag handles
  • Five shape types (point, line, rect, circle, polygon)
  • Distance measurement via @turf/turf
Multi-Format Export

Export exactly what you need.

Choose from GeoJSON, OBJ (Blender-ready, Z-up), DXF, or GeoTIFF. Select layers individually — terrain mesh, building footprints, contour lines, water lines — and download with one click.

  • GeoJSON, OBJ, DXF, and GeoTIFF formats
  • Selectable layers per export
  • Free for areas under 3 km²

Ready to explore the map?

No sign-up required. Free exports for areas under 3 km².