>>70298472. JPEG compression artifacts - This link explains what they are:
blog.topazlabs.com/jpeg-artifacts-vs-image-noise/The jpeg file format is the bane of my wallpaper searches because of these artifacts. These jpeg artifacts may be even more common than graininess in wallpapers from the internet, probably partially because plebs usually don't even notice that these artifacts are there, so have no problem using and sharing jpeg-compressed wallpapers.
A few images of yours that have really bad JPEG artifacts:
>>7027860 - look at the stars>>7027999 - look at the shadowy side of the steep ridge and along the edges of the rocks in the foreground outlined in the shadow of the background.>>7028004 - look at the trees. This one may have been grainy before it was compressed, not to mention out of focus.>>7027970 - look along the thinner branches>>7027981 - look for squares of pixels in the shadows near the bottom corners>>7027964 - look along the edges of the roofI've noticed that JPEG artifacts tend to appear in areas of images where the color changes very abruptly from one to another - in other words, areas of high contrast.
In practice, JPEG artifacts most often appear in pictures of stars or pictures of treetops from far away. It's also painfully obvious when an abstract or minimalist wallpaper has been jpeg-compressed because there are artifacts along edges where two different colors meet.
