Dear Sir/Mdm, How do I make sure that the images are not

Dear Sir/Mdm,

How do I make sure that the images are not blurry like the ones on Our services page : http://mhdesign.wpengine.com/our-services/. Is it because of WP Smush Pro?

It looks fine when I upload via upfront : http://cl.ly/082v26040e2I

Please advice.