What is JSON-LD?
JSON for Linking Data, a way to embed schema.org structured data into a page using plain JSON in a `<script type="application/ld+json">` block.
JSON-LD is the format Google explicitly recommends for adding structured data to web pages. It lives in its own <script> tag in the head or body, completely decoupled from the visual HTML. That separation is the whole appeal, the visible markup stays clean, and the structured data is easy to template, validate, and update.
Every JSON-LD block has two key properties: @context (almost always "https://schema.org") and @type (the schema.org type, Article, Product, Organization, etc.). The rest of the object's fields are the type's properties. Multiple blocks per page are fine and common.
For developers shipping marketing pages or content sites in 2026, JSON-LD is table stakes. The Context.dev landing pages render JSON-LD for Organization, BreadcrumbList, FAQPage, and WebAPI types, the marginal cost is zero and the visibility uplift in AI search is real.
In the wild
{"@context":"https://schema.org","@type":"FAQPage","mainEntity":[…]}{"@context":"https://schema.org","@type":"Organization","name":"Context.dev","url":"https://www.context.dev"}