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Improve GeoTIFF and COG Compression Options (Predictor-GDAL)

Related products:FME FormIntegrationsTransformers
  • May 25, 2026
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f.vaquero
Contributor
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Hi,

I noticed that the GeoTIFF and COG writers in FME do not expose a visible option to define the TIFF predictor (PREDICTOR), equivalent to the GDAL option:

-co PREDICTOR=2

or

-co PREDICTOR=3

This option is very useful when using compressions like LZW, DEFLATE, or ZSTD, since it can significantly improve compression efficiency, especially for continuous rasters or floating-point data.

For example:

  • PREDICTOR=2 for integer data
  • PREDICTOR=3 for Float32/Float64 data

It would be very useful to have this option directly available in the writer interface, similar to compression, tiling, or block size settings.

I think this would be a valuable improvement to make GeoTIFF and COG optimization easier and more accessible in FME.

Thanks.