Structured Data & Schema Checker.

Validate your JSON-LD structured data syntax, test Singapore local entity completeness, and generate production-grade Schema.org knowledge graph templates.

JSON-LD Payload Editor:

Presets:

{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "LocalBusiness",
      "@id": "https://www.example.com.sg/#local-business",
      "name": "Apex Digital Solutions Pte Ltd",
      "url": "https://www.example.com.sg",
      "logo": "https://www.example.com.sg/logo.png",
      "description": "Singapore-based B2B digital solutions and cloud infrastructure consulting.",
      "telephone": "+65 6123 4567",
      "email": "contact@example.com.sg",
      "priceRange": "$$",
      "address": {
        "@type": "PostalAddress",
        "streetAddress": "10 Collyer Quay, #10-01",
        "addressLocality": "Singapore",
        "postalCode": "049315",
        "addressCountry": "SG"
      },
      "geo": {
        "@type": "GeoCoordinates",
        "latitude": 1.2844,
        "longitude": 103.8510
      },
      "openingHoursSpecification": [
        {
          "@type": "OpeningHoursSpecification",
          "dayOfWeek": ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"],
          "opens": "09:00",
          "closes": "18:00"
        }
      ],
      "sameAs": [
        "https://www.linkedin.com/company/apex-digital-sg"
      ],
      "contactPoint": {
        "@type": "ContactPoint",
        "telephone": "+65 6123 4567",
        "contactType": "customer service",
        "areaServed": "SG"
      }
    }
  ]
}

Entity Graph Completeness

Valid JSON

75/ 100

Detected Entity Types:

LocalBusiness

Knowledge Graph Audit Pillars

1. Entity Identity (25 pts)25/25

@id, name, url & logo correctly configured

2. Singapore Local Grounding (25 pts)25/25

Verified Singapore address with valid 6-digit postal code

3. Authority & sameAs Links (25 pts)10/25

sameAs authority links & leadership entities present

4. Actionability & Offer Catalog (25 pts)15/25

ContactPoint & commercial catalog structured

Why Single-Entity Schemas Fail in Modern AI Search

AI answer engines (ChatGPT Search, Perplexity, Gemini) do not read disconnected, single-tag schemas in isolation. They traverse the @graph knowledge network—connecting the parent `Organization` to physical `LocalBusiness` branches, licensed `Person` practitioners, specific `Service` offerings, and `sameAs` authority registers (such as ACRA and Singapore ministry licences).

Read our technical analysis on Structured Data & AI Visibility