Schema.org markup

The most important schema types

• Article / NewsArticle / BlogPosting — for editorial content. With author, publication date, image.
• Product — for products, with price, availability, rating. A prerequisite for SERP product snippets.
• FAQPage — for FAQ sections. Enables directly clickable FAQ rich snippets in the SERP.
• HowTo — for step-by-step instructions.
• BreadcrumbList — for the page's navigation hierarchy.
• Organization / LocalBusiness — for your own brand or branch.
• DefinedTerm / DefinedTermSet — for glossaries, such as this one.
• Review / AggregateRating — ratings, the classic rich snippet lever.

Schema.org as a GEO lever

AI search engines such as ChatGPT, Perplexity and Google AI Overviews use Schema.org markup as a key to entity understanding. An article with a complete Article schema including author, datePublished, about and mentions is cited as a source significantly more often than a bare HTML text. The linking of entities via sameAs to Wikidata QIDs in particular is a strong trust signal for the AI: it can assign the named people, organisations and terms unambiguously.

Validating schema — three tools

• Google Rich Results Test — tests whether the markup meets the requirements for Google rich snippets.
• Schema.org Validator — checks the syntax and conformity with the Schema.org standard.
• Search Console reports — shows rich snippet markup found in production, including error statistics over time.

Practical example: a complete article with auto-generated schema

What does it look like in practice when Schema.org markup is generated from the editor rather than by hand? The Rankmio showcase Schema.org for GEO — how Rankmio built the article documents exactly that: a finished specialist article, alongside the full development history — brief, four target keywords, template, persona, nine active library sources and the JSON-LD generated by Rankmio on saving (Article + FAQPage + Quotation as a @graph), including Wikidata anchors via sameAs.