When you share a link to your website on Facebook, it automatically picks the first image on that page to display as the preview thumbnail. This happens through the Open Graph protocol, which is also used by other social networks, like X (formerly Twitter).

If you’d like to choose a different image for your preview, you can do this by updating the first image on that page in your website builder.

Once you’ve made your changes, it’s a good idea to check that Facebook has the latest version of your page. You can do this by running the page URL through the Facebook Debugger, which clears any old images from Facebook’s cache.