Hi Nicolas, thank you for answer. But GIMP opens this file, so the question is how it treats 4 channels? why it shows this color not other? Thanks, Michael. 2014-06-04 0:06 GMT+04:00 Nicolas Robidoux <nicolas.robidoux@xxxxxxxxx>: > Nothing to do with GIMP: JPEG does not support transparency. > Search for "jpeg transparency". You'll get links like: > http://corner.squareup.com/2013/01/transparent-jpegs.html. > _______________________________________________ gimp-developer-list mailing list List address: gimp-developer-list@xxxxxxxxx List membership: https://mail.gnome.org/mailman/listinfo/gimp-developer-list List archives: https://mail.gnome.org/archives/gimp-developer-list