Extract, composite raster bands and convert data types
Powered by GDAL WASM in your browser
Files processed in browser, never uploaded
Freely combine bands and data types
Upload the raster file to process
Select bands, set data type and output format
Band Operations extracts a subset of bands from a multi-band raster and writes a new file with the data type of your choice. It is powered by GDAL compiled to WebAssembly, so a 12-band satellite scene or a 16-bit DEM is re-composed entirely inside your browser, with no upload and no server involved.
It is the quick fix for everyday delivery problems: pulling the red, green, and blue bands out of multispectral imagery for a web map, keeping only the near-infrared band for an index calculation, or converting raw UInt16 data to 8-bit Byte so ordinary image software can display it.
Drop in a raster file - GeoTIFF plus everything from ESRI ASCII Grid and NetCDF to JPEG2000 and MBTiles; multi-band and high bit-depth files are welcome.
Tick the bands to keep in the output, then choose the output data type (keep original, or Byte / Int16 / UInt16 / Int32 / Float32 / Float64) and the output format (GeoTIFF, PNG, JPEG, or WEBP).
Run the conversion and download the re-composed raster straight from the browser.
ABand numbers start at 1 and follow the order stored inside the file - the same numbering shown by desktop GIS software. After loading, the tool displays the detected band count so you can verify it against your expectations.
AKeeping the original type leaves every value untouched. Switching types can change them: converting Float32 to Byte, for instance, forces fractional values into whole numbers within the 0-255 range. Only change the type when you are sure the values fit the target range.
AKeeping just the bands you need can shrink a file dramatically - a 3-band RGB extract of a 10-band scene is a fraction of the original size. That matters for web publishing, email attachments, and downstream tools that expect exactly three input bands.