Compare
GeoTIFF vs Zarr
GeoTIFF adds georeferencing and coordinate reference information to TIFF imagery. Zarr stores multidimensional arrays as chunks and metadata; geospatial meaning depends on additional conventions.
Which format should you choose?
Choose GeoTIFF for exchanging a georeferenced raster with GIS tools. Consider Zarr for large arrays with many times or bands and chunk-level access on object storage.
Good fit for GeoTIFF
Exchanging georeferenced maps, satellite imagery, and elevation rasters
- Keeping raster pixels with coordinate reference and projection information
- Sharing imagery between GIS and Earth-science tools
Good fit for Zarr
Storing large multidimensional arrays in chunks · Working with scientific data in cloud object storage
- Reading selected regions of large arrays
- Sharing sharded datasets between compatible tools
Basic information
| Field | GeoTIFF | Zarr |
|---|---|---|
| Extension | .tif, .tiff | .zarr |
| MIME type | image/tiff | |
| Common uses | Exchanging georeferenced maps, satellite imagery, and elevation rasters | Storing large multidimensional arrays in chunks · Working with scientific data in cloud object storage |
| How to open | Open it in GIS or remote-sensing software that supports GeoTIFF. Check CRS/EPSG, pixel-to-map transform, axis order, pixel size, NoData, bands, and compression. Re-saving in an ordinary image editor may remove geospatial tags. | Use a Zarr-capable library or analysis tool. Check version, array shape, chunk grid, codecs, and attributes. Keep the whole local directory or required object-store keys and consult producer documentation. |
| Export or convert | Exporting to PNG or JPEG may discard coordinates, raster values, or bands. For GeoTIFF or Cloud Optimized GeoTIFF conversion, validate CRS, bounds, resolution, NoData, pixel values, and required tags. | When converting from netCDF or HDF5, check dimensions, types, chunks, attributes, and coordinate conventions. Preserve the source and validate values after conversion. |
Choose by use case
Keeping raster pixels with coordinate reference and projection information
Exchanging georeferenced maps, satellite imagery, and elevation rasters
GeoTIFFSharing imagery between GIS and Earth-science tools
Exchanging georeferenced maps, satellite imagery, and elevation rasters
GeoTIFFReading selected regions of large arrays
Storing large multidimensional arrays in chunks · Working with scientific data in cloud object storage
ZarrSharing sharded datasets between compatible tools
Storing large multidimensional arrays in chunks · Working with scientific data in cloud object storage
ZarrKey point 1
GeoTIFF uses TIFF tags and GeoKeys for raster-to-model transforms and CRS; Zarr core specifies arrays, groups, metadata, and chunks but not a universal CRS mapping.
More on the differencesKey point 2
GeoTIFF is exchanged as a TIFF file, while a Zarr store consists of multiple keys that must be transferred together.
More on the differencesMore on the differences
Use GeoTIFF where a georeferenced raster and established GIS compatibility are central. For multidimensional chunked access, evaluate Zarr with an explicit geospatial metadata convention and test the storage backend.
- GeoTIFF encodes raster georeferencing and CRS through TIFF tags and GeoKeys. Zarr core defines storage of arrays and chunks, not a complete geospatial interpretation.
- A GeoTIFF is a TIFF file; a Zarr store has metadata and chunk keys, so a partial copy can leave arrays incomplete.
- During conversion verify pixel location, CRS and axis order, resolution, bands, missing values, types, compression, and overviews. Partial-read performance depends on chunk shape and storage.
Frequently asked questions
Does Zarr preserve GeoTIFF georeferencing automatically?
No. Choose a geospatial metadata convention and verify CRS, transforms, pixel alignment, and other raster properties after conversion.