See our Breadcrumb doc for a full explanation of the Breadcrumb type, and how to encode Breadcrumbs data in RDFa or microdata. This page exists to contain a machine-readable microdata description of the Breadcrumb type itself (at the URI

An item with the item type represents a Breadcrumb within a longer Breadcrumb trail. The following are the type’s defined property names:

Property Description
title The title of a breadcrumb.
url The URL of a breadcrumb.
child The next breadcrumb in the hierarchy. The child must be another Breadcrumb item.