What is a Sitewide Link?
A sitewide link is a link that appears on every page of a website. A site’s header and footer links are great examples of sitewide links. Unless removed explicitly by the site owner or theme developer, they are on every page.
Sitewide links are necessary for providing your visitors with a great user experience. Your visitors expect to find those links there, as they often contain important menus or pages that are necessary to use or navigate your site.