Hi, I've added an example of a converted grid to the proposed GTiff format with the output of various tools (tiffinfo, listgeo, gdalinfo) on it: https://github.com/rouault/PROJ/blob/rfc4_remote_and_geotiff_grid/docs/source/community/rfc/rfc-4.rst#example Even -- Spatialys - Geospatial professional services http://www.spatialys.com