Technical Definition
JSON-LD (JavaScript Object Notation for Linked Data) is Google's preferred structured data format. It's a script block that can be placed anywhere in the HTML without mixing with visible content. Benefits: easy to implement and maintain, can be dynamically generated, doesn't interfere with page content. Alternative to inline microdata or RDFa formats.
Simple Explanation (ELI13)
JSON-LD is the recommended way to add structured data to your website. It's a block of code that looks like a list of labels and values. Google prefers JSON-LD because it sits separately in your code instead of being mixed into your HTML content. Most SEO plugins generate JSON-LD automatically.
Related Terms
Structured Data, Schema Markup, Microdata, RDFa
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