E-commerce Wiki Entry

GTIN

Global Trade Item Number - a unique product identifier used internationally.

GTINs (UPC, EAN, ISBN, JAN) are barcode numbers identifying specific products globally. Including GTINs in product schema and Merchant Center feeds significantly boosts Google Shopping eligibility and listing performance. For products without manufacturer GTINs, brand+MPN combinations or marking products as "no GTIN" in feeds is required.

Related Entries

Product Schema

Schema markup that exposes product details to search engines for rich results.

Google Merchant Center

A Google platform for submitting product data for Shopping ads and free listings.

MPN

Manufacturer Part Number - a manufacturer-assigned product identifier.

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