Thank you so much for using our theme Read More. If the images appeared blur, can you please check the image sizes on the customizer. It seems that the image size is small. Go to Appearance < Customize > Layout/Design Options and Single Post Options and check the image size there. You will get image size for other pages as well, so kindly check all the options on the customizer once. Hope, this will solve the issues. Let us know if the problem is remain as it is.