Build a Schema.org BreadcrumbList JSON-LD object.
BreadcrumbList
Entries are positional: all entries except the last must include an item URL. The final entry represents the current page and omits item (Google tolerates this). A runtime assertion enforces this contract so malformed breadcrumbs are caught early.
item
if entries is empty or an intermediate entry is missing item.
entries
Build a Schema.org
BreadcrumbListJSON-LD object.Entries are positional: all entries except the last must include an
itemURL. The final entry represents the current page and omitsitem(Google tolerates this). A runtime assertion enforces this contract so malformed breadcrumbs are caught early.