It wouldn't have anything to do with this site. You should be having the same problem with all images on that computer (though it would be more noticeable with anime style images rather than photos).

  • If images look blurry in you browser but not in other programs, reset your browser's zoom level.
  • If images look blurry on you computer but text looks clear, it's probably an issue with your visibility settings such as "custom scaling level".
  • If you think text might be blurry as well, make sure your display resolution is set to your monitor's native resolution.
If you need help finding any of the settings I mentioned, tell us what OS you are using.