You can use this extension for Rich Snippet, Rich Snippets extension automatically adds structural data to the HTML of your product pages and makes your website stands out in the search engine results pages, which increases click-through rate and decreases bounce rate. Schema markup tells search engines about the structure of your product page like breadcrumbs, product name, price, rating etc.
- Increases click-through rate and decreases bounce rate
- Resolves the pricing issue by tagging the currency and price separately
- Increases page ranking in search result pages
- Adds rich snippets markup/code to web pages
The following link Magento 2 Google Rich Snippets would be useful.