Breadcrumbs: 11 Design Guidelines for Desktop and Mobile

Breadcrumbs should include only site pages, not logical categories in your IA. Each node in the breadcrumb trail should be a link to an ancestor page (with the important exception of the link corresponding to the current page, as noted above). If some of the subcategory labels in the global navigation don’t have a separate page dedicated to them do not include these subcategories in the breadcrumb trail. The ability to “click-and-go” is a crucial part of users’ understanding of breadcrumbs, so all items (except the current page) should represent a place the user can go to.