This page summarizes the relationships among specifications, whether they are finished standards or drafts. Below, each title
links to the most recent version of a document.
For related introductory information, see: Linked Data.
Completed Work
W3C Recommendations have
been reviewed by W3C Members, by software developers, and by other
W3C groups and interested parties, and are endorsed by the
Director as Web Standards. Learn more about the W3C Recommendation
Track.
Group Notes are not standards and do not
have the same level of W3C endorsement.
Standards
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2012-06-07
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translations
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errata
RDFa Core is a specification for attributes to express structured data
in any markup language. The embedded data already available in the
markup language (e.g., XHTML) is reused by the RDFa markup, so that
publishers don't need to repeat significant data in the document content.
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2012-06-07
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translations
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RDFa Core 1.1 defines attributes and syntax for embedding
semantic markup in Host Languages. This document defines one such Host
Language. This language is a superset of XHTML 1.1, integrating the
attributes as defined in RDFa Core 1.1.
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2012-06-07
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translations
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RDFa Lite is a small subset of RDFa consisting of a few attributes
that may be applied to most simple to moderate structured data markup
tasks. While it is not a complete solution for advanced markup tasks, it
does provide a good entry point for beginners.
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Group Notes
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2012-07-05
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RDFa [RDFA-CORE] enables authors to publish structured information
that is both human- and machine-readable. Concepts that have
traditionally been difficult for machines to detect, like people,
places, events, music, movies, and recipes, are now easily marked up in
Web documents. While publishing this data is vital to the growth of
Linked Data, using the information to improve the collective utility of
the Web for humankind is the true goal. To accomplish this goal, it must
be simple for Web developers to extract and utilize structured
information from a Web document. This document details such a mechanism;
an RDFa Application Programming Interface (RDFa API) that allows simple
extraction and usage of structured information from a Web document.
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2012-07-05
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The RDF Interfaces Specification defines a set of standardized interfaces for working with RDF data in a programming environment.
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2012-06-07
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HTML and RDFa (Resource Description Framework in Attributes) provides
a set of markup attributes to augment visual information on the Web with
machine-readable hints. In this Primer, we show how to express data
using RDFa in HTML, and in particular how to mark up existing
human-readable Web page content to express machine-readable data.
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2012-03-08
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Microformats, RDFa and microdata all enable consumers to extract
data from HTML pages. This data may be embedded within enhanced
search engine results, exposed to users through browser extensions,
aggregated across websites or used by scripts running within those
HTML pages.
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1998-05-11
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This document is not a technical report. It
summarizes the discussion and conclusions of a 1998 meeting held to coordinate across several W3C Working Groups on the topic of including data in HTML documents.
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Drafts
Below are draft documents:
other Working Drafts.
Some of these may become Web Standards through the W3C Recommendation Track
process. Others may be published as Group Notes or
become obsolete specifications.
Other Working Drafts
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2012-09-11
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This specification defines rules and guidelines for adapting the RDF in XHTML: Syntax and Processing (RDFa) specification for use in the HTML5 and XHTML5 members of the HTML family. The rules defined in this specification not only apply to HTML5 documents in non-XML and XML mode, but also to HTML4 and XHTML documents interpreted through the HTML5 parsing rules.
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Obsolete Specifications
These specifications have either been superseded by others,
or have been abandoned. They remain available for archival
purposes, but are not intended to be used.
Retired
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2007-03-30
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Current web pages, written in HTML, contain significant inherent
structured data. When publishers can express this data more
completely, and when tools can read it, a new world of user
functionality becomes available, letting users transfer structured
data between applications and web sites. An event on a web page can
be directly imported into a user's desktop calendar. A license on a
document can be detected so that the user is informed of his rights
automatically. A photo's creator, camera setting information,
resolution, and topic can be published as easily as the original
photo itself, enabling structured search and sharing.
RDFa is a syntax for expressing RDF structured data in HTML.
This document provides use case scenarios for RDFa. An introduction
to implementing RDFa is provided in the RDFa Primer, while
the details of the syntax are explained in the RDFa Syntax (to be
published).
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W3C
