Hi,
Not possible, jpeg format does not support transparent colors. Even converting to tiff does not help totally because jpeg is a lossy compression method and areas which had same pixel values originally are not the same after compress-decompress cycle. There is a GDAL tool “nearblack” for handling this http://www.gdal.org/nearblack.html
You can use tiffs with some lossless compression method (LZW, deflate) and save some disk space.
-Jukka Rahkonen-
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marco casella wrote:
Hello,
I have uploaded a jpeg format into my server as worldimage, trying to set the “impost transparent color” but I can’t figure out how to do it.
Do you have any tips? when I upload a tiff format I don’t have this kind of issue.
regards.
Marco