Social media

The profile links behind the social icons in the footer and the announcement bar. Fill in the ones you use; leave the rest empty.

Settings

Every field takes a full URL to your own profile.

In the Footer, when its Show social media icons setting is on. It is on by default.
In the Announcement bar, when its own Show social media icons setting is on. It is off by default.

An empty field renders no icon, so the row only ever contains accounts you actually have. If you fill nothing in, no icon row appears at all.

The same links are also added to your store’s structured data, which helps search engines connect your storefront to your social profiles.

Paste the whole URL, including https://. A username on its own won’t resolve.
Link to the account you actually post to. A dormant profile linked from every page of the storefront does more harm than an absent one.
These are links out, not sharing buttons. For letting shoppers share a product, see Social sharing.
The share image is elsewhere. What a link to your store looks like when someone posts it is controlled by the social share image under Favicon.