HTML with Microdata (Encodings)

Based on an HTML document, this encoding processes nodes with Microdata-related attributes, such as itemscope, itemtype, and itemprop.

Example

<html>
  <body>
    <div itemscope itemtype="https://schema.org/WebSite">
      <a href="https://www.namedgraph.com/" itemprop="url">
        <span itemprop="name">Named Graph</span>
      </a>
    </div>
  </body>
</html>

Messages

Ignored "content" Attribute

This message indicates a content attribute was used on a generic element with an itemprop attribute. The specification only allows for the content attribute to be used on a meta tag. While some agents support this behavior and will use the attribute value, such as Google, other agents may not. We generally ignore an incorrect usage of content and will report it as a warning.

Note: within RDFa/HTML the content attribute is valid and supported as a global attribute.

Examples

Usage	Code
Invalid	<span itemprop="name" content="Invalid">Valid</span>
Valid	<meta itemprop="name" content="Valid" />

Technical Notes

Reference: HTML, Microdata
Media Type: application/xhtml+xml (or text/html, text/xhtml)
File Name: *.html (or *.htm)