If comments are enabled for your blog on your online store, or if you have the blog author enabled on the posts you may be wondering where these images come from. If there isn't a set image, a Gravatar icon will appear.
To display an image as the avatar or author photo next to blog article author names or comments, simply create an account associated with your Shopify account email and upload the image at Gravatar.
This is a free service and is required to automatically show an avatar or author photo on articles and comments on your Shopify storefront.
Please note that you will need to create a separate Gravatar account for each author and that the email addresses used for the Gravatar account and Shopify login must match exactly.
It's also important to note that updating the user image in the Shopify admin does not affect the article and comment avatars.
How to hide avatars
If you don't want to have avatar images displaying for the comments or blog authors, you will need to add the following CSS to the very bottom of your styles.css.liquid file (online store > themes > actions > edit code > assets >styles.css.liquid):
.gravatar { display: none; }
For the Flex theme:
figure.image { display: none; }