Schema.org is a data structure standard accepted by Google, Bing and Yandex.
Most useful types
- Product — price and rating
- Article — date and author
- FAQPage — Q&A
- LocalBusiness — address, hours
- BreadcrumbList — navigation
Format
JSON-LD — modern. Inside <script type="application/ld+json">.
Validation
Google Rich Results Test finds errors.