Schema.org and how to include microdata in your web site?

microdata in your web site

This is part 2 of the article “Microdata, semantic search and SEO”.
What is the structure of microdata and how you can add microdata in your website? That we can find in the vocabulary of schema.org . It is very rich in content. The use of that vocabulary for implementing microdata in a web site is recommended from Google, Bing, Yahoo and Yandex (schema.org actually is owned by Google at the moment). Another alternative of schema.org is data-vocabulary.org .

Is there a microdata alternative?

There are the following microdata alternatives:

  • Microformats (HTML4) – there are some differences and a lot of similarities to microdata. It uses classes and attributes similar to css and there might be some confusion when you use the same class for css and for microformats in you web site.
  • RDFa (XHTML) (W3C standard 2008)
  • eRDF (Embedded RDF)
  • GRDDL (W3C Recommendation 2007)
  • Open Graph Protocol (Facebook) – Open Graph is used by Facebook. It is used for example when you share your page in Facebook – it gives information about the page’s thumbnail, description and title on the page. If Open Graph tags are missing on your page, when you share your page there might be not correct default sharing information in Google.

Open graph is needed when we want to share are pages in Facebook for example. However Open graph is not so descriptive like microdata. Also it duplicates information sometimes.
All this ways to structure data have the same goal – to make a search more semantic. Google recommends the use of microdata, although it allows also the use of Microformats and RDFa .

Tools to create microdata and microformats

If you want to add microdata and microformats to your websites, the following tools may be very useful:


More useful resources:

Schema.org –guide for microdata
Microdata и SEO – presentation in Slideshare

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