Google Merchant Center · Product Ratings
Make your product feedback work beyond your website. Google Shopping Product Ratings can display aggregated review stars on eligible Shopping ads and free product listings, helping buyers evaluate products before they click.
Merchant Center · Product Ratings
Google Shopping
Product identifiers
Review feed
Google eligibility
How Google Shopping star ratings work
Google combines product feedback from merchants and other sources to calculate Product Ratings. A merchant can submit reviews through a Merchant Center data source or a supported aggregator. Google reviews data quality, matches reviews to products and decides whether ratings appear.
- Shopping ads and free product listings
- Aggregate product ratings, not storewide testimonials
- Display is subject to Google's eligibility and ranking systems
Merchant Center · Product Ratings
Google Shopping
Product identifiers
Review feed
Google eligibility
The Product Ratings feed
A reliable review feed preserves all genuine product ratings, including critical reviews. Google expects a complete, regularly refreshed data source in its accepted format; programme participants generally need at least 50 reviews across products and must maintain monthly submissions.
- Accurate review timestamps and attribution
- Complete ratings distribution, including lower-star feedback
- Refresh the full review data source at least monthly
More places for genuine feedback
Review distribution
Product matching
Permissioned sharing
Retail destinations
Get product matching right with GTIN and MPN
Google uses globally unique product identifiers to match Merchant Center products with review records. GTIN is strongly recommended, while brand, MPN, SKU and product URLs can be fallback signals. Keep identifiers consistent across the product and review feeds.
- GTIN where available
- Consistent brand and manufacturer part number
- Matching product domains and canonical URLs
Product · Review · AggregateRating
Structured data
Product identity
Genuine review data
Google eligibility
Google Shopping, SEO stars and Store Ratings are different
Shopping Product Ratings uses review feeds; organic Google review snippets use valid Product structured data on eligible product URLs; Store Ratings describe the seller's overall customer experience. A complete ecommerce reviews strategy treats these as separate but complementary channels.
- Product Ratings: Google Shopping and eligible free listings
- Review rich results: organic product pages
- Store Ratings: merchant-level reputation programme
Feedback into decisions
Review intelligence
Review themes
Product sentiment
Performance insight
The details matter
What a compliant Google Product Ratings programme needs
Product identity
Consistent unique product identifiers and Merchant Center product data.
Genuine reviews
Include authentic relevant feedback; do not filter out negative ratings.
A complete feed
Send accepted review data including the required metadata and eligible reviews.
Monthly refreshes
Keep product review data fresh to maintain programme eligibility.
Google review
Google determines account eligibility, matching and actual star display.
Ongoing diagnostics
Check feed errors, coverage, matching rates and policy compliance.
Built for real ecommerce teams
Reviews should feel this simple.
Beautiful storefront experiences, authentic customer feedback and a plan that grows alongside your store.
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Frequently asked questions
How do I get star ratings in Google Shopping?
Enroll in Product Ratings through Google Merchant Center, submit a qualifying product review data source or use a supported aggregator, and provide accurate product identifiers. Google decides whether stars appear.
How many reviews do I need for Google Product Ratings?
Google currently requires at least 50 reviews across all products for merchants submitting a Product Ratings feed, along with other programme and data-quality requirements.
Does Cartnio send reviews to Google Shopping?
Cartnio hosts a Product Reviews feed for every store, in Google's format and updated as you publish reviews. Add its URL in Google Merchant Center as a scheduled fetch. Google still decides eligibility, and the feed works best when products have GTINs.
Can Product schema create Google Shopping stars?
Product JSON-LD on your site supports Google Search rich results. Product Ratings on Shopping ads use Merchant Center review data sources and programme eligibility; these are different mechanisms.
Are Google Store Ratings and Product Ratings the same?
No. Product Ratings refer to the items being sold, while Store Ratings represent the overall shopping experience with a merchant and have separate qualifying requirements.
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