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.

