HTML microdata

Attributes for nesting machine-readable data in HTML, added to the WHATWG's HTML specification in 2009 as a simpler alternative to RDFa and microformats; schema.org launched with it in 2011.

Read the specification ↗ html.spec.whatwg.org

Part of the thread Who sets the standard? proposes

maintained by

• WHATWG organization 2004 [src]

alternative to

• Microformats standard 2005 [src]
• RDFa standard 2008 [src]

built upon by

• Schema.org standard 2011 [src]
  Launched with microdata as its markup format, while still accepting RDFa and microformats.

[?] Unconfirmed

• start: Earliest record found is a May 2009 report of the addition to the HTML5 draft; no spec date confirmed.

Sources

• https://html.spec.whatwg.org/multipage/microdata.html
• https://en.wikipedia.org/wiki/Microdata_(HTML)