Images clear in the upfront editor but blurry on live site

My images are clear in upfront builder but when I go to my live site they get blurry. You can see the images at https://hal****king.com/about/

Here is the original image:

https://www.dropbox.com/s/l9i9vq9y663vkwk/IMG_5471.jpg?dl=0

Please help!