Input DEM (GeoTIFF)

URL

Small, in‑browser processing only. For very large rasters, consider clipping first.

DEM units assumed in meters unless specified.

Size: —

Bands: —

Data type: —

CRS: —

NoData: —

Extent: —

Resolution: —

Processing options

Band

Downsample

NoData override

Clip to Map View

Contours

Interval

Base

Min

Max

Simplify (m)

Smoothing

Hillshade

Azimuth (°)

Altitude (°)

Z‑factor

Scale (m/pixel)

Map Preview

Toggle layers in the map control to compare DEM, contours, and hillshade.

Notes:

Contours use isolines on a downsampled grid for speed; increase quality by lowering the downsample factor.
Hillshade is computed client‑side; for production COG hillshades, consider GDAL’s gdaldem hillshade.