Google recognizes the following breadcrumb properties which can be labeled using microdata.
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. |
Let suppose you have the following HTML code describing a breadcrumb trail.
<a href="http://www.example.com/dresses">Dresses</a> -->
<a href="http://www.example.com/dresses/real">Real Dresses</a> -->
<a href="http://www.example.com/dresses/real/green">Real Green Dresses</a>
Then, the same HTML code marked up with microdata will be:
<div itemscope itemtype="http://data-vocabulary.org/Breadcrumb">
<a href="http://www.example.com/dresses" itemprop="url">
<span itemprop="title">Dresses</span>
</a> -->
</div>
<div itemscope itemtype="http://data-vocabulary.org/Breadcrumb">
<a href="http://www.example.com/dresses/real" itemprop="url">
<span itemprop="title">Real Dresses</span>
</a> -->
</div>
<div itemscope itemtype="http://data-vocabulary.org/Breadcrumb">
<a href="http://www.example.com/clothes/dresses/real/green" itemprop="url">
<span itemprop="title">Real Green Dresses</span>
</a>
</div>
For more details, including how to do the same with RDFa, you may check Google's page.