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Includes a 5 Star Rating in Schema markup:
Google allows an ‘aggregateRating’ property for these Schema types and their sub-types:
If the Schema type in the Document SSO metabox is not one of these types (or one of their sub-types), then a 5 star rating cannot be added, as doing so would trigger an error in the Google search console. See Google’s Review snippet documentation for additional information.
The Google’s Review Snippet technical guidelines reminds us to:
The WPSSO Add Five Stars add-on includes a 5 star rating if the document Schema markup does not already have an ‘aggregateRating’ property. It is always preferable to include actual ratings and reviews from your visitors and/or customers in the webpage. The WPSSO Add Five Stars add-on can be used in combination with any of the following third-party plugins and service APIs, or the WPSSO Ratings and Reviews add-on.
Suggested Rating and Review Plugins and Services:
The WPSSO Core plugin supports a selection of plugins that provide ratings and reviews:
The WPSSO Core Premium plugin also supports a selection of remote service APIs that provide ratings and reviews:
WPSSO Add Five Stars (WPSSO AFS) is an add-on for the WPSSO Core plugin, which provides complete structured data for WordPress to present your content at its best for social sites and search results – no matter how URLs are shared, reshared, messaged, posted, embedded, or crawled.