Images shown in each post look slightly blurry compared to original ones. I guess it’s because images’ width is a bit wider than contents’ width and has to adjust to it.
So could you tell me how to increase contents’ width on single post pages or do you have any thoughts about what makes images blurry?
Actually the images used for featured images will auto fit in covered position without cropping the images so the images you are using might be smaller in size so the image might get stretched while getting fit and covered. We recommend you to use the image of minimum size (width = 800px and height = 480px).