Have you considered using a vector mask, for example, a shapefile on your server, or depending on your client, maybe a geoJSON file?
On Wed, May 28, 2025 at 12:29 AM carsten.lockenkoetter--- via gdal-dev < gdal-dev@lists.osgeo.org> wrote: > Hi Even, > > thanks for your response. > > I just tried it with WEBP, but I'm getting the following error message: > > Warning 6: 'WEBP' is an unexpected value for COMPRESS creation option of > type string-select. > Warning 6: driver GTiff does not support creation option WEBP_LEVEL > ERROR 1: Cannot create TIFF file due to missing codec for WEBP. > > The docs says: Requires libwebp >= 0.1.4 > > I'm using the compiled binaries from gisinternals.com (v.3.9.3) and it > seems the webp isn't supported with it. > Do I need to compile the dependency myself and simply copy it into the bin > folder? > And how do you compile it? I'm new to this topic—sorry about that. > > *Gesendet: *Dienstag, 27. Mai 2025 um 21:43 > *Von: *"Even Rouault" <even.roua...@spatialys.com> > *An: *"carsten.lockenkoet...@web.de" <carsten.lockenkoet...@web.de>, " > gdal-dev@lists.osgeo.org" <gdal-dev@lists.osgeo.org> > *Betreff: *Re: [gdal-dev] Black artifacts with JPEG compression > > Am I overlooking something in my process? > > No, you're just hitting a fundamental limitation of JPEG compresson > > Do you have any ideas on how I can get rid of the artifacts while still > keeping disk usage low? > > Use lossy WEBP compression that fully supports transparency. > > -- http://www.spatialys.com > My software is free, but my time generally not. > > _______________________________________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/gdal-dev > -- Richard W. Greenwood
_______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/gdal-dev
