A link sitewide refers to a hyperlink that is present on every page of a website, providing a direct connection to a specific page or website. These links are typically found in the header, footer, or sidebar of a website and are used to improve website navigation and user experience. They can also be used for SEO purposes, as they help search engines understand the structure and hierarchy of a website. Link sitewide is an essential element of website design and plays a crucial role in enhancing website usability and visibility.