Microdata

Microdata is an inline HTML markup format that uses attributes like itemprop, itemscope, and itemtype to define structured data directly within the visible content of a webpage.

🧠 Full Definition

Microdata is a W3C standard for embedding structured data directly into HTML. It allows publishers to label specific content elements—such as text, images, and links—with semantic meaning so that machines can interpret what the content represents.

Common Microdata attributes include:

• itemscope – Defines the scope of an entity
• itemtype – Declares the schema type (e.g., schema:Person)
• itemprop – Specifies a property of the entity (e.g., name, description, url)

Although JSON-LD has become the preferred format for structured data, Microdata remains useful for:

• Inline schema for product ratings, authorship, or pricing
• CMS-driven environments requiring inline semantic markup
• Legacy systems or SEO plugins without JSON-LD support

💡 Why It Matters

Microdata may not be visible to users, but search engines and AI crawlers still process it. In the WebMEM framework, Microdata can function as:

• A fallback trust signal when JSON-LD is unavailable
• A complementary semantic layer within headings, paragraphs, or inline content
• A way to wrap dynamically rendered elements with meaning

🧩 Use in WebMEM

While WebMEM publishing workflows prioritize JSON-LD for glossary, FAQ, and semantic digest outputs, Microdata can be applied for:

• Inline rendering of DefinedTerm and FAQPage types
• Marking up nested entities inside visible page sections
• Boosting semantic reinforcement and co-occurrence within body content

Microdata is part of the WebMEM Markup Layer and can complement structured outputs in other formats.

🗣️ In Speech

“Microdata adds semantic meaning right in the HTML, so machines understand your content without a separate data block.”

🔗 Related Terms

• JSON-LD
• Structured Signals
• WebMEM Markup Layer