JSON-LD

JSON-LD (JavaScript Object Notation for Linked Data) is a structured data format that embeds machine-readable information into web pages using standard JSON syntax wrapped in a `<script type="application/ld+json">` tag. It tells search engines exactly what a page is about by labeling content with standardized vocabulary from Schema.org — identifying entities like organizations, products, articles, FAQs, and events along with their properties and relationships. JSON-LD scripts sit in the page's HTML head and do not affect how the page looks to visitors. Google recommends JSON-LD as its preferred structured data format over alternatives like Microdata and RDFa.

Search engines use JSON-LD to power rich results — enhanced search listings that display star ratings, FAQ accordions, product pricing, breadcrumb trails, and how-to steps directly in the search results page. Pages with properly implemented structured data tend to earn higher click-through rates because they stand out visually and provide answers before the user even clicks. For publishers, this means more organic traffic to flipbooks and document pages without additional advertising spend. JSON-LD also helps AI assistants and answer engines understand your content, which is increasingly important as users shift toward conversational search.

FlipLink's [SEO and social previews](/features/seo-and-social-previews) feature lets you define metadata for each publication, which gets translated into structured data that search engines can parse. The marketing site at fliplink.me also uses JSON-LD schemas for Organization, SoftwareApplication, FAQPage, BreadcrumbList, and Article types to maximize search visibility. When you publish a flipbook with a custom title, description, and thumbnail, FlipLink generates the appropriate structured markup so search engines can index and display your content accurately. This structured data works alongside [OG tags](/glossary/og-tags) — JSON-LD targets search engines while OG tags target social media platforms.