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GEO Scoring8 min read· Last updated:

Schema & Structured Data for AI Visibility: The JSON-LD Playbook

AI assistants do not guess what your content is — they read explicit machine-readable labels. JSON-LD structured data is the most direct way to tell AI systems exactly what your organisation is, what you offer, and what questions you answer.

By Kyle Fairburn, Founder & AI Specialist at NexRank

Why Machines Need Explicit Labels

Humans are excellent at reading context. We can look at a web page and immediately understand: this is a software company, they sell project management tools, they are based in London, and their customer reviews are very positive.

AI crawlers — despite their intelligence — prefer explicit declarations over inference. When your page says "@type": "Organization" with a structured set of properties, the AI does not need to infer. It knows. And knowledge it doesn't need to infer is knowledge it can reliably use to answer questions about you.

This is the core value proposition of structured data: it removes ambiguity from the AI's interpretation of your content.

The JSON-LD Format

JSON-LD (JavaScript Object Notation for Linked Data) is the recommended format for structured data on the web. It lives in a <script type="application/ld+json"> tag in your page's <head> section and does not affect your visible content.

Organization schema covers your business identity: name, URL, description, logo, founding date, contact information, and a sameAs array that links your entity to your profiles on LinkedIn, Wikipedia, Wikidata, and other platforms. The sameAs array is particularly important — it tells AI systems that your website, your LinkedIn page, and your Wikidata entry are all the same organisation.

The GEO scan checks whether your site has Organization schema in place and which required fields are missing — the most common gaps we see are missing sameAs links and absent contact information.

High-Value Schema Types for GEO

1. Organization (or LocalBusiness)

Every business should have Organization schema on their homepage. LocalBusiness extends Organization with address, opening hours, and geographic coordinates — essential for businesses that want to appear in local AI recommendations.

2. FAQPage

FAQPage schema is arguably the highest-ROI structured data investment for GEO. It marks up question-answer pairs in a format that AI systems can extract and reproduce directly in responses. Each question and its accepted answer become machine-readable — the AI does not have to interpret or summarise your FAQ content, it reads it directly.

When AI systems encounter FAQPage schema, your specific phrasing is far more likely to appear verbatim in their responses. Sites without FAQPage schema rely on AI systems inferring their answers from prose — an inherently less reliable process.

3. Article (and BlogPosting)

Every article or blog post should have Article schema with author, datePublished, dateModified, and publisher information. AI systems use these to:

  • Verify content freshness (prefer recently updated articles)
  • Assess author credibility (cross-reference author entities)
  • Attribute quotes correctly when citing your content

4. Product and Service

E-commerce sites and service businesses should mark up their offerings with Product or Service schema. Key fields: name, description, offers (price, currency), aggregateRating (if you have reviews), and provider.

5. BreadcrumbList

Breadcrumb schema helps AI systems understand your site architecture — where a specific page sits in your content hierarchy. This context influences how AI summarises your content.

Schema Impact on AI Citations

Research from GEO studies consistently shows that pages with structured data are cited more accurately and more frequently by AI assistants:

  • 2–3× more accurate citations: AI systems extract facts from structured data rather than inferring them from prose
  • Higher confidence attributions: When an AI "knows" your schema, it cites you with confidence rather than hedging
  • Richer answer components: FAQPage schema allows AI responses to include structured Q&A directly from your site

What the GEO Scan Checks for Schema

Not all structured data is equal — incorrectly formed or incomplete schema provides weak signals. The most common mistakes we see when auditing sites include missing required fields, schema applied to the wrong pages, and outdated schema types that are no longer well-supported.

Your GEO scan detects which schema types are present on your site, which are missing entirely, and which pages would benefit most from markup. Organization schema on your homepage, FAQPage schema on your FAQ and service pages, and Article schema on your blog posts are the three highest-impact starting points for most businesses.

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