Product Schema with star ratings is a powerful SEO asset for e-commerce sites and review sites. Once configured, search results display yellow stars and the number of ratings, which can boost click-through rates by 25-30%. But be careful: the data must be genuine — fake ratings can trigger a manual penalty from Google.
Who this is for: E-commerce site operators, product review site owners, and anyone running a website with a user review system. What you'll gain: How to correctly configure the Product + AggregateRating Schema combination and pass Google's validation tools; how to understand the compliance requirements and avoid the risk of penalties. Key compliance requirements:
- ratingValue must fall within the range of worstRating and bestRating
- reviewCount must exactly match the number of reviews actually displayed on the page (Google verifies this manually)
- Do not add AggregateRating to products that have no genuine user reviews
- At least 1 visible user review is required for the rich result to appear
Recommended tool: Use the Product type in this site's Schema generator — enter your product information to automatically generate standard-compliant code and avoid the errors that come with writing code by hand.