For websites, breadcrumbs refer to a hierarchal secondary menu that shows your position on a website. This alternative menu system helps visitors navigate your site. Breadcrumbs also help search engines understand your content.
The breadcrumbs feature is enabled by default. When enabled, the alternative menu is displayed at the top of all text pages automatically.
Breadcrumbs provide a convenient secondary menu, reduce the use of the back button, and aid visitors who arrive at a subpage understand their relative position on your website.
In other words, breadcrumbs can prevent visitors from getting lost on your website.
Search engines like Google may also use your breadcrumbs in their search results. This makes your search snippet more desirable to searchers.