a graphic designer optimizes the images (products, galleries,...) for me, with good proportion of quality and compression,… and then Magento creates new images,… that are double size and not same quality. In example, 3 optimized images with sizes 392K, 428K, 281K, Magento create new ones to cache folder, and what I get at frontend are this new images: 642K, 738K, 504K.
So, my question is How can I solve this? It has no sense to have a graphic designer, and then Magento overwrite his work,...
Thank you.