Review schema is a type of structured data markup used to indicate that a webpage contains a review, along with a numeric rating, making the page eligible to display star ratings directly in search engine results.
Star ratings displayed in search results tend to significantly boost click-through rates, since they provide a quick, visually compelling trust signal before a user even clicks through to the page.
Google has specific, strict guidelines around review schema to prevent manipulation — markup must reflect genuine, verifiable reviews of the actual product or service on that page, and misuse can result in the rich result being disabled or, in serious cases, a manual action against the site.
Review schema is implemented carefully and compliantly as part of our Technical SEO service.