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I · GIS & GeospatialAV-G18

AV-G18

DEM → Heightmap

Turn .hgt or GeoTIFF elevation into 16-bit PNG, Terrain-RGB, Terrarium or RAW heightmaps.

● Runs on your device; nothing is uploaded

How to use it

  1. Drop a .hgt, .hgt.zip or GeoTIFF elevation file.
  2. Choose the output Format, such as 16-bit PNG or Terrain-RGB.
  3. For PNG or RAW 16-bit, pick how Values are scaled.
  4. Choose how Voids / nodata are filled, and the GeoTIFF band if needed.
  5. Check the preview and grid stats, then click Download.

Limits

File size
150 MB
Raster cells
25 million (larger rasters are resampled)
16-bit values
0–65535 (whole-metre mode clips below 0)
Preview
512 px on the longest side
Features
  • 16-bit greyscale PNG, Terrain-RGB, Terrarium, RAW 16-bit and RAW 32-bit output
  • Stretch min–max to the full range, or store whole metres
  • Fills voids from neighbours, the minimum, or zero
  • Reports grid size, height range, void count and bounds
  • Conversion runs in a Web Worker

For AI agents: avtools_dem_heightmap

AV-G18 · DEM → Heightmap

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