Originally Posted by Michael P
Recompressing compressed images will always introduce more noise; you can set the quality setting in your Admin Controls under image settings. All the image code is located in image-inc.php.
Thanks for the reply, Michael.
I just noticed something else strange. No matter what I set "Quality setting for resizing/thumbnails?" to, I get the exact same sized uploaded file. If I set it to 10 or 100, I get the same exact size watermarked upload. Should that setting change the size of the watermarked uploaded image?
I will look in image-inc.php to see if I can find anything to change that helps.
My concern is that the watermarked images show 66 compression while the unwatermarked ones show 80 compression. If I upload the exact same file twice, once with watermarking on and once with watermarking off, then download both images and bring them into an image editor, the watermarked image shows level 66 compression and the unwatermarked image shows level 79 compression. It seems that there must be a setting somewhere to adjust that?