Google Shopping and Merchant Center 2026 on PrestaShop: Product Feed, GTIN, Performance Max
Google Shopping in 2026: 18% of revenue when the feed is well done, 3% by default. The gap plays out on three levels: feed quality (required attributes, GTIN, identifiers), campaign strategy (Performance Max vs Standard), Merchant Center compliance (Omnibus, return, shipping). The complete guide to a poorly exploited acquisition channel on PrestaShop.