X3Photo Gallery Forums

The "share buttons" are for sharing your gallery on social media sites. You can add your custom link anywhere in the form of a text link or logo as part of the background, or even some custom html, but I am not sure what that has to do with the sharing buttons, as this is a module strictly created for sharing (not for simply redirecting to another link).

So, yes you can easily add a link to your website, but no not inside the sharing buttons as from where a visitor shares an image.