Product Schema & JSON-LD Guide: How LLMs Use Your Structured Data (2026)

By Sixthshop Team · Published January 5, 2025 · Updated April 28, 2026

Complete guide to product schema JSON-LD for ecommerce. Covers how ChatGPT, Gemini, Perplexity, and Amazon Rufus use structured data — plus new 2026 fields like additionalProperty, hasMerchantReturnPolicy, and shippingDetails.