RDFa (Resource Description Framework in Attributes) is a technique that allows just that: it provides a set of markup attributes to augment the visual information on the Web with machine-readable hints., RDFa is a way of expressing RDF in XHTML. Creative Commons uses RDFa to express license and other information about works for the semantic web. When you select a license in our license chooser, you are given a snippet of HTML that contains RDFa., RDFa (“Resource Description Framework in attributes”) is having its five minutes of fame: Google is beginning to process RDFa and Microformats as it indexes websites, using the parsed data to enhance the display of search results with “rich snippets.” Yahoo!, meanwhile, has been processing RDFa for about a year., RDFa is a specification for attributes to express structured data in any markup language. This document specifies how to use RDFa with XHTML. The rendered, hypertext data of XHTML is reused by the RDFa markup, so that publishers don't need to repeat significant data in the document content., In this comprehensive guide, we‘ll dive deep into RDFa—what it is, how it works, why it matters, and how you can start leveraging it for your own website. What is RDFa? RDFa is a specification for embedding structured data within HTML documents., XHTML+RDFa (Extensible Hypertext Markup Language + Resource Description Framework in attributes) is an extended version of the XHTML markup language for supporting RDF through a collection of attributes and processing rules in the form of well-formed XML documents..