Structured data is a standard way to describe a page's content in a language that search engines and AI understand without having to guess. Schema markup is the shared vocabulary (defined by schema.org) you use to declare, for example, "this is a FAQ", "this is a product with this price", "this article is written by this author".
It isn't a magic ranking factor: it won't lift you on its own. But it makes your pages machine-readable, and in 2026 that counts twice — for rich results on Google and to get cited by AI answers.
Why it matters in 2026
- Rich results. Review stars, expandable FAQs, price and availability, breadcrumbs: they take more room in the SERP and lift click-through.
- AI understanding and citation. Facts stated explicitly (author, date, price, questions and answers) are easier for Google AI Overviews, ChatGPT and Perplexity to extract and cite.
- Disambiguation. You help the engine connect your entity (company, person, product) instead of leaving it to interpret the text.
The most useful schema types
- Organization — the site/company identity (name, logo, social profiles). Goes on the home page.
- Article — for articles and guides: title, author, dates. Reinforces perceived E-E-A-T.
- FAQPage — real questions and answers: can generate the expandable box in the SERP.
- Product — price, availability, reviews for e-commerce.
- LocalBusiness — local businesses: address, hours, service area.
- BreadcrumbNavigation — the page hierarchy shown in results.
JSON-LD: the format Google recommends
There are three syntaxes (JSON-LD, Microdata, RDFa), but Google recommends JSON-LD: a <script type="application/ld+json"> block in the <head>, separate from the visible HTML. It's cleaner to maintain and doesn't clutter the page markup.
The most common mistakes
- Schema that doesn't reflect the page. Declaring reviews or FAQs not present in the visible content violates the guidelines and can trigger a manual action.
- Missing required fields. Each type has required properties: without them, the rich result won't fire.
- Orphan schema. Valid markup with no matching real data (price, author, date).
- Not validating. A silent syntax error makes the whole block ignored.
How to generate and validate schema
You don't need to write it by hand. You can create correct markup for Organization, Article, FAQ, Product and other types with our free JSON-LD schema generator, no signup required: fill in the fields, copy the block and paste it into the <head>. Then check it with Google's Rich Results Test and the Schema Markup Validator.
Want to know which pages already have structured data and which don't? Start from the free SEO audit: the presence of schema is one of the signals it checks, with priorities on what to fix first.