JSON-LD Validator Free Online Tool 2026

Last updated March 22, 2026

JSON-LD Validator Examples

The JSON-LD Validator checks structured data markup against Schema.org specifications and Google's rich result guidelines. Below are examples of valid and invalid JSON-LD for common schema types.

Example: Valid Product Schema

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "Wireless Noise-Cancelling Headphones",
  "image": "https://example.com/images/headphones.jpg",
  "description": "Premium wireless headphones with active noise cancellation.",
  "brand": {
    "@type": "Brand",
    "name": "AudioTech"
  },
  "offers": {
    "@type": "Offer",
    "url": "https://example.com/headphones",
    "priceCurrency": "USD",
    "price": "149.99",
    "availability": "https://schema.org/InStock"
  },
  "aggregateRating": {
    "@type": "AggregateRating",
    "ratingValue": "4.5",
    "reviewCount": "128"
  }
}
</script>

// Validator output:
✓ Valid Product schema
✓ Required: name ✓
✓ Recommended: image ✓, description ✓, brand ✓, offers ✓, aggregateRating ✓
✓ Eligible for: Product rich result with price and rating stars

Example: Invalid Product Schema (Missing Required Fields)

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Product",
  "description": "Great headphones",
  "price": "149.99"
}
</script>

// Validator output:
✗ Validation errors:

1. Missing required property: "name"
   Fix: Add "name": "Your Product Name"

2. Invalid property: "price"
   "price" is not a direct property of Product.
   Fix: Use "offers": { "@type": "Offer", "price": "149.99", "priceCurrency": "USD" }

3. Missing recommended: image, brand, aggregateRating
   Adding these improves rich result eligibility.

Example: Valid Recipe Schema

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Recipe",
  "name": "Classic Chocolate Chip Cookies",
  "image": "https://example.com/cookies.jpg",
  "author": {
    "@type": "Person",
    "name": "Jane Baker"
  },
  "datePublished": "2024-01-15",
  "description": "The best chocolate chip cookie recipe.",
  "prepTime": "PT15M",
  "cookTime": "PT12M",
  "totalTime": "PT27M",
  "recipeYield": "24 cookies",
  "recipeCategory": "Dessert",
  "recipeCuisine": "American",
  "recipeIngredient": [
    "2 cups all-purpose flour",
    "1 tsp baking soda",
    "1 cup butter, softened",
    "2 eggs",
    "2 cups chocolate chips"
  ],
  "recipeInstructions": [
    {
      "@type": "HowToStep",
      "text": "Preheat oven to 375°F."
    },
    {
      "@type": "HowToStep",
      "text": "Mix butter and sugar until fluffy."
    },
    {
      "@type": "HowToStep",
      "text": "Add eggs and vanilla, then mix in flour."
    },
    {
      "@type": "HowToStep",
      "text": "Fold in chocolate chips and bake 10-12 minutes."
    }
  ],
  "aggregateRating": {
    "@type": "AggregateRating",
    "ratingValue": "4.8",
    "ratingCount": "342"
  },
  "nutrition": {
    "@type": "NutritionInformation",
    "calories": "180 calories"
  }
}
</script>

// Validator output:
✓ Valid Recipe schema
✓ All required properties present
✓ Eligible for: Recipe rich result with rating, cook time, and image

Example: Valid FAQ Schema

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [
    {
      "@type": "Question",
      "name": "What is your return policy?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "We offer a 30-day return policy on all items."
      }
    },
    {
      "@type": "Question",
      "name": "How long does shipping take?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Standard shipping takes 3-5 business days."
      }
    }
  ]
}
</script>

// Validator output:
✓ Valid FAQPage schema
✓ 2 questions found
✓ Eligible for: FAQ rich result (expandable Q&A in search results)

Example: Valid Event Schema

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Event",
  "name": "JavaScript Conference 2024",
  "startDate": "2024-09-15T09:00:00-05:00",
  "endDate": "2024-09-17T18:00:00-05:00",
  "eventStatus": "https://schema.org/EventScheduled",
  "eventAttendanceMode": "https://schema.org/OfflineEventAttendanceMode",
  "location": {
    "@type": "Place",
    "name": "Austin Convention Center",
    "address": {
      "@type": "PostalAddress",
      "streetAddress": "500 E Cesar Chavez St",
      "addressLocality": "Austin",
      "addressRegion": "TX",
      "postalCode": "78701",
      "addressCountry": "US"
    }
  },
  "offers": {
    "@type": "Offer",
    "url": "https://example.com/tickets",
    "price": "299",
    "priceCurrency": "USD",
    "availability": "https://schema.org/InStock"
  },
  "organizer": {
    "@type": "Organization",
    "name": "JS Conf Org",
    "url": "https://example.com"
  }
}
</script>

// Validator output:
✓ Valid Event schema
✓ Eligible for: Event rich result with date, location, and ticket price

Common Validation Errors

Error: Wrong date format
  ✗ "startDate": "September 15, 2024"
  ✓ "startDate": "2024-09-15" or "2024-09-15T09:00:00-05:00"

Error: Missing @context
  ✗ { "@type": "Product", "name": "Widget" }
  ✓ { "@context": "https://schema.org", "@type": "Product", "name": "Widget" }

Error: Invalid enum value
  ✗ "availability": "InStock"
  ✓ "availability": "https://schema.org/InStock"

Error: Wrong property name
  ✗ "recipeIngredients": [...]   (plural)
  ✓ "recipeIngredient": [...]    (singular)

Error: String where object expected
  ✗ "author": "Jane Baker"
  ✓ "author": { "@type": "Person", "name": "Jane Baker" }

Paste your JSON-LD structured data to validate it against Schema.org specifications and check eligibility for Google rich results.