You forgot your glasses?
Just couldn't resist. (=・ω・=)
Or they are not loading completely. Sometimes they start pixelated and then load in a better quality. Check your internet connection, wait to see if they become clear after a while or try in another browser.
If you're reading on mobile the browsers will compress the picture if it's too big causing it to be pixelated. You could just save the image and read it on in your phone gallery or wherever it saves.
read using firefox instead of chrome
Can someone tell me why my pages keep looking blurred