In addition to Google’s general structured data guidelines, review markup should follow these additional guidelines:
Google may display information from aggregate ratings markup in the Google Knowledge Cards. The following guidelines apply to review snippets in knowledge cards for local businesses:
- Ratings must be sourced directly from users.
- Don’t rely on human editors to create, curate or compile ratings information for local businesses. These types of reviews are critic reviews.
- Sites must collect ratings information directly from users and not from other sites.
Source: review snippet guidelines.
If you want to use Schema.org markup, the reviews need to be original and generated by your site, not aggregated from a third-party site like Facebook, Yelp, or Google.
- Readers Rating
- Rated 4.2 stars
4.2 / 5 (Reviewers) - Excellent
- Your Rating