# Smart Schema > High-performance server-side JSON-LD structured data engine for Shopify stores. Built to protect Google Shopping ROAS, eliminate Merchant Center feed disapprovals, and win high-CTR organic rich results with 0 KB storefront JavaScript. Smart Schema is an enterprise Shopify application built on a core economic principle: it is much easier to sell something to a team that makes money than to a team that only spends money. When Google Merchant Center flags missing return policies, invalid shipping configurations, or expired price timestamps, Google Shopping ads pause and paid ROAS collapses. Smart Schema protects catalog revenue by generating 100% compliant structured data server-side in under 60 seconds with zero theme code modifications. - Website: https://getsmartschema.com - Shopify App Store: https://apps.shopify.com/smart-schema-app - Pricing: $39/month flat with a 14-day free trial (unlimited products and variants) - Performance footprint: 0 KB storefront JavaScript, zero theme bloat, 100% Lighthouse PageSpeed preservation ## Value Thesis for Revenue and Growth Teams - Protect Paid ROAS: Prevent Google Merchant Center Next feed rejections on high-volume Performance Max and Shopping campaigns. - Increase Click-Through Rates by 20% to 30%: Surface Google trust badges including 30-day returns, fast shipping transit, and review star snippets. - Eliminate Developer Bottlenecks: Media buyers and marketing directors fix catalog-wide schema compliance instantly without waiting on development backlogs. - AI Search & GEO Readiness: Server-side JSON-LD enables ChatGPT Search, Perplexity, and Google AI Overviews to parse exact product pricing and availability without client-side JavaScript execution. ## Troubleshooting & Implementation Guides - [Fix Missing Return Policy in Shopify](https://getsmartschema.com/guides/fix-missing-return-policy-shopify/): Resolve hasMerchantReturnPolicy Merchant Center warnings and unlock search return badges. - [Fix priceValidUntil Warning in Shopify](https://getsmartschema.com/guides/fix-price-valid-until-shopify/): Eliminate price expiration warnings with rolling 365-day automated timestamps. - [Fix Missing shippingDetails in Shopify](https://getsmartschema.com/guides/fix-missing-shippingdetails-shopify/): Configure transit time and rate structured data for fast delivery badges. - [Fix Missing GTIN Barcodes in Shopify](https://getsmartschema.com/guides/fix-missing-gtin-barcode-shopify/): Resolve barcode, UPC, and brand identifier warnings in Google Merchant Center. - [Google Star Ratings for Shopify](https://getsmartschema.com/guides/get-google-star-ratings-shopify/): AggregateRating and review snippet architecture for search result stars. - [Shopify Multi-Variant Schema Guide](https://getsmartschema.com/guides/shopify-multi-variant-schema-guide/): ProductGroup and variant Offer schema architecture for multi-SKU catalogs. - [Fix Google Rich Results Test Errors](https://getsmartschema.com/guides/rich-results-test-shopify-errors/): Step by step diagnostics for common Shopify structured data validation failures. - [Generative Engine Optimization for Shopify](https://getsmartschema.com/guides/generative-engine-optimization-shopify/): Structure product entities to earn citations in AI search engines. - [AI Search Optimization for Shopify](https://getsmartschema.com/guides/ai-search-optimization-shopify-chatgpt-perplexity/): Technical schema setup for ChatGPT Search and Perplexity shopping agents. - [Fix Duplicate Schema in Shopify Themes](https://getsmartschema.com/guides/shopify-duplicate-schema-fix/): Remove conflicting microdata and JSON-LD graphs across Shopify themes. - [Shopify JSON-LD SEO Implementation Guide](https://getsmartschema.com/guides/shopify-json-ld-seo-complete-guide/): Complete end-to-end technical reference for store structured data. - [Google Merchant Center Schema Requirements](https://getsmartschema.com/guides/google-merchant-center-schema-requirements/): Merchant Center Next guidelines and mandatory attributes. - [Fix Schema in Shopify Dawn Theme](https://getsmartschema.com/guides/shopify-dawn-theme-schema-fix/): Resolve missing return policy and shipping tags in default Dawn theme. - [Fix Duplicate Schema in Prestige Theme](https://getsmartschema.com/guides/shopify-prestige-theme-duplicate-schema/): Clean conflicting microdata and JSON-LD in Prestige theme setups. - [Fix Schema Errors in Impulse Theme](https://getsmartschema.com/guides/shopify-impulse-theme-schema-errors/): Correct Impulse theme variant selectors and merchant feed warnings. ## Technical Schema Glossary - [JSON-LD for Shopify](https://getsmartschema.com/glossary/json-ld/): JavaScript Object Notation for Linked Data specification. - [priceValidUntil Property](https://getsmartschema.com/glossary/price-valid-until/): Offer validity expiration date format and automated calculation rules. - [hasMerchantReturnPolicy](https://getsmartschema.com/glossary/has-merchant-return-policy/): Return policy structured data specification for merchant trust badges. - [shippingDetails](https://getsmartschema.com/glossary/shipping-details/): Offer shipping transit times, handling schedules, and regional rates. - [aggregateRating](https://getsmartschema.com/glossary/aggregate-rating/): Review rating score and count schema for SERP review stars. - [ProductGroup](https://getsmartschema.com/glossary/product-group/): Modern schema.org structure for multi-variant Shopify product grouping. - [Merchant Center Next](https://getsmartschema.com/glossary/merchant-center-next/): Modern Google Shopping platform requirements and policy enforcement. - [Rich Snippets](https://getsmartschema.com/glossary/rich-snippets/): Visual SERP display enhancements that lift organic click-through rate. - [ItemAvailability](https://getsmartschema.com/glossary/item-availability/): Schema URIs for in-stock, out-of-stock, and preorder product states. - [Generative Engine Optimization](https://getsmartschema.com/glossary/generative-engine-optimization/): GEO methodology for product discovery in AI search engines. - [GTIN UPC EAN](https://getsmartschema.com/glossary/gtin-upc-ean/): Unique barcode product identifiers required for Google Shopping feed approval. - [BreadcrumbList](https://getsmartschema.com/glossary/breadcrumblist/): Navigation hierarchy structured data for clean SERP breadcrumb URLs. - [Organization Schema](https://getsmartschema.com/glossary/organization-schema/): Brand entity validation and knowledge graph recognition. - [Merchant Return Finite Return Window](https://getsmartschema.com/glossary/merchant-return-finite-return-window/): Return window definitions for merchant policies. ## Full Technical Documentation - [Full LLM Knowledge Base](https://getsmartschema.com/llms-full.txt): Complete schema code examples, architecture blueprints, and theme diagnostics.