Hello,

I have a large TIFF file made with the following command:
gdal_translate.exe source.ecw d:\gdalcogtif.tif -of COG -co COMPRESS=WEBP -co 
BIGTIFF=YES -co NUM_THREADS=7

This works fine in QGIS, and I'm able to add the layer to GeoServer. When 
rendering however, I get these errors in the console:
javax.imageio.IIOException: Unsupported compression type (tag number = 50001)!
        at 
it.geosolutions.imageioimpl.plugins.tiff.TIFFImageReader.read(TIFFImageReader.java:1939)
        at 
com.sun.media.jai.imageioimpl.ImageReadOpImage.computeTile(ImageReadOpImage.java:697)

I'd prefer to keep the file that's provided, and not adding another layer of 
transformation. Would it be possible to add WEBP decompression for the Image IO 
library?

Regards,
Jelmer Baas
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