A Merchant Center feed is the structured list of products, with attributes such as ID, title, description, price, availability, image link, and GTIN, that a retailer submits to Google Merchant Center. Google uses it to create Shopping ads and the product ads in Performance Max.
Key Takeaways
- The feed replaces keywords and ad copy for product ads: Google matches searches against its attributes
- Products can be approved, limited, or disapproved; disapproved products do not serve
- Feeds come from a file, a Google Sheet, an e-commerce platform integration, or the API
- Titles and product categories carry most of the matching weight
- Custom labels let you group products by business criteria
What Is a Merchant Center Feed
In a Search campaign you write keywords and ads. In a Shopping campaign you write neither: Google reads the feed and decides which products to show for which searches, composing the ad from the product’s image, title, price, and store name.
How It Works
Each product is a row with required attributes (such as id, title, description, link, image_link, price, availability) and optional ones that improve matching and eligibility (such as brand, gtin, product_type, google_product_category, and the custom labels). Merchant Center checks every product against Google’s product data specification and policies, and reports issues per item. Products with blocking issues are disapproved until fixed.
Practical Example
A store sells “Trail Runner X” shoes, with a feed title of just the model name. Shoppers search for “waterproof trail running shoes men”. Because the title does not contain the product type or key attributes, Google has little to match it against. Rewriting the title to “Trail Runner X Men’s Waterproof Trail Running Shoes” gives the search something to match.
Why It Matters
For product ads the feed is the targeting and the creative at once. Missing attributes, vague titles, or disapproved items limit sales more than bids or budgets can compensate for, and the problems are only visible in Merchant Center diagnostics.