I noticed that all of my featured images for my blog posts are showing up blurry on the blog post’s individual page. When you click on the image, the image is clear when it shows up full screen – but as it exists as a header on the page, it is blurry.
All of the images are large enough to be used as a feature image, so I’m not sure what setting I’ve got wrong that is making the images show up blurry.