Schema.org JSON-LD Structured Data Standards
Structured data is a standardized machine-readable vocabulary founded by Google, Microsoft, Yahoo, and Yandex under the Schema.org consortium. Implemented as JSON-LD (JavaScript Object Notation for Linked Data) embedded within HTML <script type="application/ld+json"> blocks, it qualifies web pages for Google Rich Results (star ratings, FAQ accordions, pricing snippets, and breadcrumbs).
Supported Google Rich Result Schema Types
- Article / BlogPosting: Displays rich headlines, author cards, publish dates, and thumbnail images in Google News and Discover feeds.
- FAQPage: Renders expandable interactive question-and-answer accordions directly in organic search results.
- Product & Offer: Exposes live pricing, currency, availability (InStock/OutOfStock), and aggregate star ratings in Google Shopping SERPs.
- Organization & LocalBusiness: Populates Google Knowledge Graph panels with verified logos, contact numbers, and social profile links.
- BreadcrumbList: Replaces raw URLs in search snippets with clean hierarchical navigation trails (e.g.
Home > Products > Shoes).
Why Google Recommends JSON-LD over Microdata
Google Search Central explicitly recommends JSON-LD over inline Microdata or RDFa because JSON-LD separates structured data from visual presentation markup, preventing layout changes from breaking machine-readable entity schemas.
Synergies with On-Page & Content Tools
Combine schema generation with our on-page auditing tools:
- Live Schema Validation: Validate JSON-LD entities on live URLs using our Schema Markup Checker.
- Open Graph Tags: Build rich social card previews with our Open Graph Checker.
- On-Page Technical Auditing: Inspect semantic H1/H2 hierarchy with our On-Page SEO Checker.
Frequently Asked Questions
Where should the JSON-LD script tag be placed?
JSON-LD can be placed in either the <head> or <body> section of the HTML document. Placing it in the <head> ensures early parsing by search engine crawlers.
Can a single webpage contain multiple schema types?
Yes. You can declare multiple schema objects on one page using the @graph pattern (e.g. combining an Article, BreadcrumbList, and Organization into a unified linked entity graph).
Does adding Schema markup guarantee rich snippets in Google Search?
No. Schema markup makes a page eligible for rich results, but Google algorithms decide whether to render rich snippets based on user query intent, domain authority, and content quality.