Definition:
Google Merchant Center is a Google platform that allows retailers to provide and manage information about their products for display across its services. This data can be used in free listings and advertising campaigns, subject to the requirements of each option.
It brings together catalogue information, such as names, images, prices and availability, alongside business details and terms of sale. It does not replace the online store and is not, in itself, an advertising campaign.
Table of contents
What Google Merchant Center is used for
Merchant Center organises the information Google uses to present a retailer’s products. It can work with products sold online and, through the relevant features, with inventory from physical stores.
For an ecommerce business, its main functions include the following:
- Managing the catalogue: adding products and keeping their attributes up to date.
- Detecting problems: reviewing issues that may limit or prevent particular items from appearing.
- Supporting free listings: providing data so that products can appear without advertising expenditure.
- Supplying product campaigns: making the catalogue available to Google Ads through the appropriate account link.
- Providing sales information: managing shipping, returns and other applicable terms.
- Reviewing results: checking product performance within the available features.
Creating an account and submitting the catalogue does not guarantee that every item will appear. Google reviews the data, the store and compliance with its policies.
How products reach Merchant Center
Information can be submitted through files, spreadsheets, connections with ecommerce platforms or an API. There are also features that obtain data directly from the website.
A product feed is a structured source containing catalogue attributes. Each item is identified and described through fields that Google can interpret, such as its title, product page link, image, price and availability.
The product data specification sets out which attributes are required, optional or needed according to the product type and market. These may include the brand, GTIN —a trade item identifier— or variant details such as size and colour.
The submission method should make maintenance easier. An automatic connection reduces manual tasks, but it is still necessary to check that it transmits catalogue changes correctly.
Free listings and product ads
Free listings allow eligible products to appear across Google without paying for that placement. They do not require a Google Ads campaign, although they must comply with the service’s terms.
Product ads are part of advertising campaigns. The Merchant Center catalogue supplies the commercial information, while Google Ads manages aspects such as budget, bidding strategy and goals.
Both options can be used together. Maintaining accurate data supports their operation, but does not guarantee a particular position or sales volume.
In Google Ads campaign management, catalogue problems can affect ad delivery even when the campaign is correctly configured.
What information needs to stay up to date
The submitted data must match what the shopper finds in the store. The price, currency, availability and advertised variant must correspond to the product on the landing page.
Images, identifiers and shipping and return terms also need to be reviewed. Discrepancies can lead to disapprovals or limit product visibility.
The update frequency depends on how the catalogue changes and the method used to submit it. A product that is out of stock or has a new price needs to reflect that change; submitting the information correctly once is not enough.
Merchant Center displays issues to help identify these problems. Some affect individual items, while others can affect the entire account.
Differences between Merchant Center, Google Shopping and Google Ads
These services are related but perform different functions:
- Merchant Center: receives and manages information about the retailer and its products.
- Google Shopping: is a product search and discovery experience, including Google’s Shopping tab.
- Google Ads: allows advertisers to create and manage advertising campaigns that can use the Merchant Center catalogue.
Uploading products to Merchant Center therefore does not activate ads or restrict their potential appearance to the Shopping tab.
Merchant Center is accessed using a Google Account, which does not have to use a Gmail address. Website verification and its association with the retailer are separate from having a Google Business Profile, which is especially relevant to features involving physical stores.