RDFa (cont.)

• RDFa extends (X)HTML a bit by:

• • defining general attributes to add metadata to any elements (a bit like the class in microformats, but via dedicated properties)
  • provides an almost complete “serialization” of RDF in XHTML

• It is a bit like the microformats approach but with more rigor and fully generic

• • makes it easy to mix different vocabularies, which is not that easy with microformats