Product Images Blurry on Homepage

Hi there,

I’m not the most technical so apologies if this question has a simple answer. On my website my product images are displayed on their product pages in high res and good quality, yet when scrolling down the homepage (where the images are also featured) I notice that the same images are slightly blurry, and not as good quality as the ones on the product pages.

Any idea why this might be?

My website is: http://www.thecbdplace.co.uk

Thanks in advance!