Free tool
Schema Checker
I check the data behind stars, prices and breadcrumbs in Google. Paste the address of one page.
What schema markup does
Schema markup is a small block of data in your page that tells Google what the page is about: a product and its price, a business and its address, a recipe, an event. With the right fields, Google can show extra details next to your page in search.
Correct markup makes a page eligible for these details. Google still decides whether to show them. This tool reads JSON-LD, the format Google recommends. To see exactly how Google reads a page, also try Google's own Rich Results Test.