What is structured data?

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Structured data: Code added to a page that describes its content in a standard vocabulary, usually schema.org, so machines can tell what the page is and what it contains.

Google calls it a standardised format for describing a page and classifying its content. It supports JSON-LD, Microdata and RDFa, and recommends JSON-LD. Common types include FAQPage for question-and-answer pages and HowTo for step-by-step instructions.

Google says no special markup is needed to appear in its AI answers, so structured data is best seen as a clear label on the page rather than a way in.

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