Update/Note: This is not an official RDFa button, those (in the known colours) will be provided by W3C's Communications Team once RDFa is a Rec or CRec. A couple of days ago I created an RDFa technology button, and I was asked to share it, so here it is:


(PNG, GIF, SVG source file)

Please see the W3C Semantic Web Logos and Policies page for license details. This button is derived from the original W3C ones.