Schema markup is machine-readable metadata embedded in your page that tells search engines — and AI engines — what type of content they're looking at and who produced it. It's been a Google SEO best practice for over a decade. For AI search, it's even more important: AI engines use schema to classify content, resolve entity references, and decide whether a source is authoritative enough to cite.
GEO Auditor's schema engine detects every schema type on your site, validates it, and identifies the specific additions that would have the biggest impact on your AI visibility.
What the schema engine checks
Schema detection
The engine scans for all three schema formats — JSON-LD, Microdata, and RDFa — across your key pages. For each schema found, it reports:
- Schema type (e.g.,
Organization,Article,FAQPage) - Format (JSON-LD preferred; Microdata and RDFa are supported but less flexible)
- Completeness score — how many of the recommended properties are present
- Whether it's server-rendered (critical for AI crawler compatibility)
- Specific issues and missing recommended properties
GEO-critical schema signals
Beyond generic schema detection, the engine flags the signals most directly linked to AI citability:
- Organization schema present: The single most important schema for AI entity recognition. Establishes who runs the site.
- sameAs links: Links from your Organization schema to Wikidata, Wikipedia, LinkedIn, Crunchbase, and other authoritative profiles. Each
sameAslink connects your website to an entity in an AI knowledge graph. The more links, the higher the entity confidence. - Wikipedia/Wikidata sameAs: Specifically checked because these are the most authoritative knowledge graph sources AI models use.
- Speakable specification: A
SpeakableSpecificationproperty tells AI assistants which sections of the page are most suitable for voice/AI response synthesis. Most sites don't have this; adding it is a low-effort differentiator. - FAQPage schema: FAQ schemas are cited verbatim by AI engines more often than any other schema type. If you have a Q&A section, wrapping it in FAQPage JSON-LD is one of the highest-ROI schema additions.
- Person/Author schema: Author entities on article pages establish expertise and E-E-A-T signals for AI models.
Validation
Invalid schema is worse than no schema — it can confuse crawlers and cause parsing errors. The engine validates:
- JSON syntax (malformed JSON-LD is extremely common)
- Valid schema.org type names (typos like "Organisation" instead of "Organization")
- Deprecated schemas (e.g.,
Productproperties that were removed in recent spec updates) - Nesting errors (e.g., placing an
Articleinside aWebSite)
Server-rendering check
If your schema markup is injected by JavaScript after page load, AI crawlers won't see it. The schema engine checks whether all detected schemas are present in the raw HTML response before JavaScript executes. Client-side-only schema is effectively invisible to AI.
The most impactful schema additions
In order of impact for AI search visibility:
1. Organization with sameAs
{
"@context": "https://schema.org",
"@type": "Organization",
"name": "Your Company",
"url": "https://yoursite.com",
"sameAs": [
"https://www.wikidata.org/wiki/Q12345",
"https://www.linkedin.com/company/yourcompany",
"https://en.wikipedia.org/wiki/Your_Company"
]
}2. FAQPage on Q&A content
{
"@context": "https://schema.org",
"@type": "FAQPage",
"mainEntity": [{
"@type": "Question",
"name": "What is GEO?",
"acceptedAnswer": {
"@type": "Answer",
"text": "GEO (Generative Engine Optimization) is the practice of..."
}
}]
}3. Article with author Person
{
"@context": "https://schema.org",
"@type": "Article",
"headline": "Your Article Title",
"author": {
"@type": "Person",
"name": "Author Name",
"url": "https://yoursite.com/about",
"sameAs": "https://www.linkedin.com/in/authorname"
},
"datePublished": "2026-01-15"
}Auto-generated schema snippets
The paid GEO Auditor report includes ready-to-paste JSON-LD snippets for every schema addition recommended for your specific site — pre-filled with your domain, brand name, and existing content. No manual schema writing required.
Run a free scan to see your schema coverage score and which critical schemas are missing from your site.