JSON-LD Structured Data - Definition | Knowledge Base

Definition

JSON-LD (JavaScript Object Notation for Linked Data) is the recommended format for adding structured data to web pages. It uses Schema.org vocabulary to provide explicit, machine-readable context about your content that LLMs can parse and understand.

Importance

JSON-LD bridges the gap between human-readable content and machine understanding. It provides explicit metadata about entities, relationships, and facts on your page, allowing LLMs to confidently extract and cite information without ambiguity.

Why It Matters

Large language models need structured context to understand what information is authoritative and how it relates to other entities. JSON-LD provides this context in a standardized format that all major AI systems can parse, increasing the likelihood your content will be cited in AI-generated answers.

Common Schema Types

Article — Blog posts, articles, and written content
FAQPage — Pages with question-and-answer pairs
HowTo — Step-by-step instructions and tutorials
Product — Products and services
Organization — Company and brand information
Person — Individual people and authors
WebSite — Overall website information
DefinedTerm — Glossary entries and definitions

Example: Article Schema

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "Model Context Marketing Guide",
  "description": "Complete guide to optimizing content for LLMs",
  "author": {
    "@type": "Person",
    "name": "Stephen Newman"
  },
  "datePublished": "2025-11-04",
  "dateModified": "2025-11-04"
}
</script>

Example: FAQ Schema

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [{
    "@type": "Question",
    "name": "What is Model Context Marketing?",
    "acceptedAnswer": {
      "@type": "Answer",
      "text": "Model Context Marketing is the practice of 
      creating structured, factual content that LLMs 
      can understand and cite."
    }
  }]
}
</script>

Implementation

Add JSON-LD scripts to the <head> or top of the <body> of your pages. Use multiple schemas when appropriate—a page can have both Article and FAQPage schemas if it contains both article content and Q&A sections.