The W3C announced today that three specifications have reached recommendation status:
RDFa 1.1 Core - Second Edition
XHTML+RDFa 1.1 - Second Edition
As the W3C website explains, "The last couple of years have witnessed a fascinating evolution: while the Web was initially built predominantly for human consumption, web content is increasingly consumed by machines which expect some amount of structured data. Sites have started to identify a page's title, content type, and preview image to provide appropriate information in a user's newsfeed when she clicks the 'Like' button. Search engines have started to provide richer search results by extracting fine-grained structured details from the Web pages they crawl. In turn, web publishers are producing increasing amounts of structured data within their Web content to improve their standing with search engines."
"A key enabling technology behind these developments is the ability to add structured data to HTML pages directly. 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. "
Manu Sporny, the editor of the HTML+RDFa 1.1 specification, told us that, "The release of RDFa 1.1 for HTML5 establishes it as the first HTML-based Linked Data technology to achieve recognition as an official Web standard by the World Wide Web Consortium."
"RDFa 1.1 is now stable and ready for production use in a variety of markup languages including HTML5, HTML4, SVG, XHTML1, XHTML5, and all XML-derived data formats such as ePub and Docbook."
He continued, "This release, and all previous releases, have been made possible due to the hard work that the RDFa Community has done over the past several years. This community continues to build new tools and provide support for Web authors that want to integrate RDFa 1.1 into their production HTML websites."
Juan Sequeda's "Introduction to RDFa":
The official RDFa website:
For web developers and authors that want to try out RDFa, there is a web-based tool to help you mark up web pages:
More in-depth questions and concerns can be sent to the community mailing list: