Is JSON-LD required for AI search?

No, but it is the format Google explicitly recommends and the most reliable way to give AI systems an unambiguous description of your page. Microdata and RDFa are valid but harder to maintain because they couple structured data to your DOM.

Where should the JSON-LD block live in the HTML?

Inside . Either or works; is conventional. Server-side rendering is preferred over JavaScript injection because not all crawlers and AI fetchers execute JavaScript reliably.

Does ChatGPT or Perplexity actually parse JSON-LD?

Neither vendor publishes a documented schema parser. Independent tests reported by Search Engine Roundtable suggest both systems read JSON-LD as additional page text rather than as parsed schema. Implementing schema still helps because the prose inside it is clean and declarative.

Should I have multiple JSON-LD blocks on a page?

Prefer a single block with @graph containing all related types. Multiple blocks are allowed but make consistency harder and increase the risk of duplicating Organization or WebSite entities.

What is the fastest way to validate JSON-LD?

Paste it into the schema.org validator for vocabulary checks, then run the live URL through the Rich Results Test for Google-eligibility checks. Add a JSON-schema linter to CI to catch trailing commas before they ship.

How often should I update JSON-LD?

Update dateModified whenever you make a substantive content change. For evergreen pages, schedule a quarterly review (90 days) to refresh dates, sources, and any properties whose values may have drifted. Stale dateModified is one of the most common reasons AI systems rotate citations to fresher competitors.

What is the difference between @id and url?

url is a resolvable URL that points to a canonical page. @id is an identifier (often the same URL plus a fragment) that lets schema entities reference each other inside an @graph. Stable @id URIs are what make multi-entity graphs cohere across pages and across your site.

Can JSON-LD hurt SEO if implemented wrong?

Yes. Schema that contradicts visible content, inflates ratings, or misrepresents authorship can trigger a Google manual action under the structured data policies. Always validate, and never markup content that does not appear on the page.

Do I need ClaimReview to be eligible for AI Overview citations?

No. ClaimReview is reserved for registered fact-checking organizations and is narrow in scope. Most pages get AI Overview eligibility through Article, FAQPage, HowTo, Product, or Course schema, combined with high-quality content and a clean technical baseline.

JSON-LD for AI Search: Complete Guide

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JSON-LD is the schema.org-compatible format Google recommends for structured data. For AI search, embed JSON-LD in a