Audit of 80 Shopify and WooCommerce product pages finds gaps in shipping and return schema

A technical audit examined public HTTP responses from 100 online stores, of which 80 had readable product pages. Most of those pages lacked key structured data, with 78 of 80 missing shippingDetails and 76 of 80 missing hasMerchantReturnPolicy in their Product JSON-LD. The author notes that Offer fields like price and availability were generally present, while native files such as /llms.txt were largely absent unless manually configured. The study is explicitly limited to a non-random sample and does not mean stores lack shipping or return policies on their websites. The author also promotes a read-only tool, CitedCart, that lets store owners inspect their own markup.