Hallo,
Siehe auch:
http://arstechnica.com/information-technology/2014/07/we-dont-need-new-image-formats-mozilla-works-to-build-a-better-jpeg/
https://blog.mozilla.org/research/2014/07/15/mozilla-advances-jpeg-encoding-with-mozjpeg-2-0/
http://people.mozilla.org/~josh/lossy_compressed_image_study_july_2014/
Mathias