JSON-LD

JSON-LD is the specific structured-data format, a block of JSON embedded in a page's HTML, that both traditional search engines and AI systems prefer for schema markup over older formats like microdata, because it's easier to generate, validate, and parse without altering a page's visible layout.

Why it matters

Choosing JSON-LD over older structured-data formats isn't a stylistic preference, it's the format Google and most AI systems explicitly document as preferred, which makes it the safer default for any new schema implementation.

Related terms