Breadcrumbs are a navigational tool used in websites and applications to help users understand their location within a hierarchy. They typically appear as a series of links at the top of a page, showing the path taken to reach the current page. For example, a breadcrumb trail might look like this: Home > Category > Subcategory > Current Page. This feature enhances user experience by allowing easy backtracking to previous sections without using the browser's back button. Breadcrumbs are particularly useful in complex websites with multiple layers of content, making navigation more intuitive and efficient for users.