What is JSON-LD (Structured Data Format)?

JSON-LD is a way of embedding structured data into your web pages using a script tag. It tells search engines and AI crawlers exactly what your content is — an Article, a Person, a Product, an FAQ — in a format they can parse programmatically. Unlike older formats like Microdata or RDFa, JSON-LD sits in its own script block and does not clutter your HTML.

A typical JSON-LD block includes an @context (always schema.org), an @type (Article, Person, FAQPage, etc.), and properties specific to that type — headline, author, datePublished, description, and so on. Google, Bing, and AI search engines all support JSON-LD as their preferred structured data format.

For AI search engines specifically, JSON-LD provides clean, unambiguous signals. When ChatGPT or Perplexity processes a page with Article schema, it knows exactly who wrote it, when it was published, and what it covers — making it far more likely to cite the page accurately.