Product data insights
Practical guides on product information, catalog quality and channel feeds.
Tag: merchant center
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Google ShoppingHow GTIN Check Digits Work: Calculate, Validate and Convert UPC, EAN and GTIN-14
How the GTIN check digit is calculated, with worked EAN-13, UPC-A and GTIN-8 examples, conversion rules, and why valid-looking codes still fail…Sep 26, 2026 · 10 min read- Google Shopping
Google Shopping Product Titles: Formulas and Examples for 12 Product Types
Title formulas with weak and strong examples for 12 product types, plus Google’s rules on length, capitals and promotional text. Includes a free title checker…Sep 26, 2026 · 11 min read 
Google ShoppingGoogle Product Category Examples: 47 Products Mapped to the Right ID
47 real products mapped to Google product categories, with the ID and full path for each, and the rules for choosing the most specific category…Sep 26, 2026 · 13 min read