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HTML5 Tutorial For Beginners - Part 8 - Microdata
HTML5 Tutorial For Beginners - Part 8 - Microdata
Published: 2014/06/12
Channel: Simon Sez IT
Using HTML Schemas for Semantic Markup Microdata
Using HTML Schemas for Semantic Markup Microdata
Published: 2014/03/05
Channel: Kevin W. Tharp
HTML head, meta, rich snippets, microdata
HTML head, meta, rich snippets, microdata
Published: 2015/01/19
Channel: Learn To Code
Using HTML5 Microdata (Part 1)
Using HTML5 Microdata (Part 1)
Published: 2012/09/06
Channel: WebDesignWithStephen
Learn html5, Introducing microformats, microdata and rdfa
Learn html5, Introducing microformats, microdata and rdfa
Published: 2016/04/30
Channel: TUTORIALS AND TRAINING
Learn html5, Using microdata
Learn html5, Using microdata
Published: 2016/04/30
Channel: TUTORIALS AND TRAINING
How to apply markup microdata to your website and increase web traffic
How to apply markup microdata to your website and increase web traffic
Published: 2013/09/21
Channel: Raul Forde
HTML5 Microdata Markup and the SEO Impact: What is Microdata?
HTML5 Microdata Markup and the SEO Impact: What is Microdata?
Published: 2013/03/28
Channel: jmgrp
How To add Microdata in your website
How To add Microdata in your website
Published: 2016/01/27
Channel: Saumya Majumder
HTML5 Microdata - Easily Add Semantic Meaning to Your Site
HTML5 Microdata - Easily Add Semantic Meaning to Your Site
Published: 2011/04/08
Channel: InfoQ
Working with HTML5 Microdata, Web Workers, and Web Applications
Working with HTML5 Microdata, Web Workers, and Web Applications
Published: 2015/03/05
Channel: Robin Nixon
06 | HTML Tips and Tricks | Microdata
06 | HTML Tips and Tricks | Microdata
Published: 2017/01/27
Channel: Rocks Cover
SEO Training Course - Video 27: HTML Microdata [On-Page SEO Key Element #7]
SEO Training Course - Video 27: HTML Microdata [On-Page SEO Key Element #7]
Published: 2015/04/11
Channel: Digital Marketing Strategy with David Bain
HTML Tips and Tricks - 06 Microdata
HTML Tips and Tricks - 06 Microdata
Published: 2014/04/14
Channel: Hand In Hand
90 Seconds to Perfect Microdata - Rich Snippets Tu
90 Seconds to Perfect Microdata - Rich Snippets Tu
Published: 2012/12/19
Channel: Adam Zahler
HTML MicroData Troubleshooting | Website SEO
HTML MicroData Troubleshooting | Website SEO
Published: 2017/01/12
Channel: Soudip Chakrabortty
How to use and add schema rich snippets to your local business website
How to use and add schema rich snippets to your local business website
Published: 2014/05/01
Channel: Simon Hayter
Part 3 - Google Webmaster Tools Structured Data
Part 3 - Google Webmaster Tools Structured Data
Published: 2014/06/28
Channel: RankYa
Magento 2 Tips - How to remove default Schema.org Microdata
Magento 2 Tips - How to remove default Schema.org Microdata
Published: 2017/08/24
Channel: Digital Startup
Microdata Wordpress  Plug-in for SEO by Optimum7.Com
Microdata Wordpress Plug-in for SEO by Optimum7.Com
Published: 2011/11/10
Channel: Duran Inci
MicroData MD300 install the firmware
MicroData MD300 install the firmware
Published: 2015/09/18
Channel: Xr Microdata
HTML5 Microdata
HTML5 Microdata
Published: 2011/11/14
Channel: Trey Brister
Microdata For SEO - What is Microdata? How Does It Affect Search Engine Ranking?
Microdata For SEO - What is Microdata? How Does It Affect Search Engine Ranking?
Published: 2013/10/27
Channel: Search Engine Ranking & Optimization Tips
Add Schema Micro data to WordPress
Add Schema Micro data to WordPress
Published: 2012/10/13
Channel: Brad Dalton
Learn SEO Part 26 of 27: HTML Microdata [On-Page SEO Key Element #7]
Learn SEO Part 26 of 27: HTML Microdata [On-Page SEO Key Element #7]
Published: 2016/03/27
Channel: WikiUpdates
Using HTML5 Microdata (Part 2)
Using HTML5 Microdata (Part 2)
Published: 2012/09/06
Channel: WebDesignWithStephen
HTML5 forms and microdata - Akiva Levi
HTML5 forms and microdata - Akiva Levi
Published: 2011/04/06
Channel: איגוד האינטרנט הישראלי ISOC-IL
Microdata Wordpress SEO Plug-in by Optimum7.Com
Microdata Wordpress SEO Plug-in by Optimum7.Com
Published: 2011/11/09
Channel: Duran Inci
Drupal Microdata - Hva, hvorfor og hvordan
Drupal Microdata - Hva, hvorfor og hvordan
Published: 2012/10/11
Channel: Frontkomchannel
Joomla! Microdata implementation
Joomla! Microdata implementation
Published: 2014/05/01
Channel: Joomla!
Microdata ep 02 - With Examples
Microdata ep 02 - With Examples
Published: 2016/09/30
Channel: Debora Cardu
Name, Address & Phone Number in Local Business Microdata Schema Markup
Name, Address & Phone Number in Local Business Microdata Schema Markup
Published: 2017/01/23
Channel: Ryan Joos
Validate Microdata Code & Check Google+ Rich Snippets: Local SEO Tutorial
Validate Microdata Code & Check Google+ Rich Snippets: Local SEO Tutorial
Published: 2013/01/31
Channel: Adam Zahler
Tech Thursday: Microdata 101
Tech Thursday: Microdata 101
Published: 2014/12/11
Channel: Breaking Even Communications
Joomla Patch Testing - Microdata Joomla 3.3
Joomla Patch Testing - Microdata Joomla 3.3
Published: 2014/03/30
Channel: Joomla Beat
How to use microdata - Ep: 12
How to use microdata - Ep: 12
Published: 2013/05/01
Channel: WeAreMINDSCAPE
Enrich Search Results with JSON-LD Markup through Google Tag Manager
Enrich Search Results with JSON-LD Markup through Google Tag Manager
Published: 2016/06/24
Channel: Measureschool
Schema Microdata and SEO
Schema Microdata and SEO
Published: 2016/10/03
Channel: Benj Arriola
01 - Google Structured Data Course - JSON LD Microdata Simplified
01 - Google Structured Data Course - JSON LD Microdata Simplified
Published: 2017/09/09
Channel: RankYa
Structured Data Testing Tool - Rich Snippets Explained
Structured Data Testing Tool - Rich Snippets Explained
Published: 2016/01/14
Channel: Small Business Web Designs Sydney
microdata
microdata
Published: 2015/08/01
Channel: Panos Oikonomou
Google Merchant Microdata Warnings
Google Merchant Microdata Warnings
Published: 2016/03/24
Channel: FeedArmy
How to Use Schema Markup for SEO (Includes WordPress Examples)
How to Use Schema Markup for SEO (Includes WordPress Examples)
Published: 2016/07/09
Channel: RankYa
MicroData MD300 SSD
MicroData MD300 SSD
Published: 2015/09/20
Channel: Xr Microdata
TerraPop Beta Extract System Tutorial - Microdata
TerraPop Beta Extract System Tutorial - Microdata
Published: 2014/03/06
Channel: IPUMS
Updating to HTML5 with Schema.org Support on Genesis 2.0
Updating to HTML5 with Schema.org Support on Genesis 2.0
Published: 2013/08/11
Channel: Rob Cubbon
What is Microdata?
What is Microdata?
Published: 2016/06/17
Channel: University of Manitoba Libraries
Advanced Techniques for Adding Structured Data Markup to WordPress
Advanced Techniques for Adding Structured Data Markup to WordPress
Published: 2016/07/09
Channel: RankYa
Daemon--Micro-Data Center Design Challenge
Daemon--Micro-Data Center Design Challenge
Published: 2015/04/23
Channel: LeMaker Team
How to Make Pure HTML/CSS Star Rating System
How to Make Pure HTML/CSS Star Rating System
Published: 2017/05/31
Channel: محمد مبروك
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WIKIPEDIA ARTICLE

From Wikipedia, the free encyclopedia
Jump to: navigation, search

Microdata is a WHATWG HTML specification used to nest metadata within existing content on web pages.[1] Search engines, web crawlers, and browsers can extract and process Microdata from a web page and use it to provide a richer browsing experience for users. Search engines benefit greatly from direct access to this structured data because it allows them to understand the information on web pages and provide more relevant results to users.[2][3] Microdata uses a supporting vocabulary to describe an item and name-value pairs to assign values to its properties.[4] Microdata is an attempt to provide a simpler way of annotating HTML elements with machine-readable tags than the similar approaches of using RDFa and microformats.

In 2013, because the W3C HTML Working Group failed to find someone to serve as an editor for the Microdata HTML specification, its development was terminated with a 'Note'.[5][6] However, since that time, two new editors were selected, and two newer versions of the working draft have been published, W3C First Public Working Draft 04 May 2017[7] and W3C Working Draft 26 June 2017[8].

Vocabularies[edit]

Microdata vocabularies does not provide the semantics, or meaning of an Item.[9] Web developers can design a custom vocabulary or use vocabularies available on the web. A collection of commonly used markup vocabularies are provided by Schema.org schemas which include: Person, "Place", Event, Organization, Product, Review, Review-aggregate, Breadcrumb, Offer, Offer-aggregate. Major search engine operators like Google, Microsoft and Yahoo! rely on this markup to improve search results. For some purposes, an ad-hoc vocabulary is adequate. For others, a vocabulary will need to be designed. Where possible, authors are encouraged to re-use existing vocabularies, as this makes content re-use easier.[1]

Localization[edit]

In some cases, search engines covering specific regions may provide locally-specific extensions of microdata. For example, Yandex, a major search engine in Russia, supports microformats such as hCard (company contact information), hRecipe (food recipe), hReview (market reviews) and hProduct (product data) and provides its own format for definition of the terms and encyclopedic articles. This extension was made in order to solve transliteration problems between the Cyrillic and Latin alphabets. After the implementation of additional parameters from Schema's vocabulary,[10] indexation of information in Russian-language web-pages became more successful.

Global attributes[edit]

  • itemscope – Creates the Item and indicates that descendants of this element contain information about it.[1]
  • itemtype – A valid URL of a vocabulary that describes the item and its properties context.
  • itemid – Indicates a unique identifier of the item.
  • itemprop – Indicates that its containing tag holds the value of the specified item property. The property's name and value context are described by the item's vocabulary. Properties values usually consist of string values, but can also use URLs using the a element and its href attribute, the img element and its src attribute, or other elements that link to or embed external resources.[1]
  • itemref – Properties that are not descendants of the element with the itemscope attribute can be associated with the item using this attribute. Provides a list of element ids (not itemids) with additional properties elsewhere in the document.[1]

Example[edit]

The following HTML5 markup may be found on a typical “About” page containing information about a person:

<section> Hello, my name is John Doe, I am a graduate research assistant at
the University of Dreams.
My friends call me Johnny. 
You can visit my homepage at <a href="http://www.JohnnyD.com">www.JohnnyD.com</a>.
I live at 1234 Peach Drive, Warner Robins, Georgia.</section>

Here is the same markup with added Schema.org[11][12][13] Microdata:

<section itemscope itemtype="http://schema.org/Person"> 
	Hello, my name is 
	<span itemprop="name">John Doe</span>, 
	I am a 
	<span itemprop="jobTitle">graduate research assistant</span> 
	at the 
	<span itemprop="affiliation">University of Dreams</span>. 
	My friends call me 
	<span itemprop="additionalName">Johnny</span>. 
	You can visit my homepage at 
	<a href="http://www.JohnnyD.com" itemprop="url">www.JohnnyD.com</a>. 
	<section itemprop="address" itemscope itemtype="http://schema.org/PostalAddress">
		I live at 
		<span itemprop="streetAddress">1234 Peach Drive</span>,
		<span itemprop="addressLocality">Warner Robins</span>,
		<span itemprop="addressRegion">Georgia</span>.
	</section>
</section>

As the above example shows, Microdata items can be nested. In this case an item of type http://schema.org/PostalAddress is nested inside an item of type http://schema.org/Person.

The following text shows how Google parses the Microdata from the above example code. Developers can test pages containing Microdata using Google's Rich Snippet Testing Tool.[14]

Item
   Type: http://schema.org/Person
   name = John Doe
   jobTitle = graduate research assistant
   affiliation = University of Dreams
   additionalName = Johnny
   url = http://www.johnnyd.com/
   address = Item(1)
Item 1
   Type: http://schema.org/PostalAddress
   streetAddress = 1234 Peach Drive
   addressLocality = Warner Robins
   addressRegion = Georgia

The same machine-readable terms can be used not only in HTML Microdata, but also in other annotations such as RDFa or JSON-LD in the markup, or in an external RDF file in a serialization such as RDF/XML, Notation3, or Turtle.

Support[edit]

Browser Version Support
Maxthon 3.3.9.600 Yes
Opera (Presto) 12.17 Yes
Opera (Blink) 15 No
Firefox 49 No[18]
Chrome No
Internet Explorer No
Safari No
Microsoft Edge No

See also[edit]

References[edit]

  1. ^ a b c d e "Microdata — HTML Draft Standard". Whatwg.org. Retrieved 2016-06-30. 
  2. ^ "MicroData - The Future of Search Engine Relevance and Optimization (SEO)". Lyquix.com. Retrieved 2016-06-30. 
  3. ^ Schema.org http://schema.org/
  4. ^ ""Distributed," "Extensibility," And Other Fancy Words". Diveintohtml5.info. Retrieved 2016-06-30. 
  5. ^ Cotton, Paul (2 Oct 2013). "WG Decision to publish HTML Microdata as a WG Note". public-html-admin@w3.org (Mailing list). Retrieved 2016-06-30. 
  6. ^ "HTML Microdata". W3.org. 23 June 2014. Retrieved 2016-06-30. 
  7. ^ "HTML Microdata W3C First Public Working Draft 04 May 2017". World Wide Web Consortium (W3C). Retrieved 2017-09-06. 
  8. ^ "HTML Microdata W3C Working Draft 26 June 2017". World Wide Web Consortium (W3C). Retrieved 2017-09-06. 
  9. ^ "HTML Standard". Web Hypertext Application Technology Working Group. Retrieved 30 December 2016. 
  10. ^ "Semantic markup deployment in Russia". Academia.edu. Retrieved 2016-06-30. 
  11. ^ "Documentation". Schema.org. Retrieved 2016-06-30. 
  12. ^ "Type Hierarchy". Schema.org. Retrieved 2016-06-30. 
  13. ^ Schema.org Turtle RDFS Schema
  14. ^ a b "Rich snippets (microdata, microformats, RDFa)". Google webmaster central. 2016-05-17. Retrieved 2016-06-30. 
  15. ^ "Rich Snippet display clarification". Google.com. 2016-06-22. Retrieved 2016-06-30. 
  16. ^ Google Webmasters Channel (2011-12-06). Types of Rich Snippets (Video). Retrieved 2016-06-30. 
  17. ^ Opera Software Documentation Team (2011-12-06). "Opera 11.60 for Windows changelog". Opera.com. Retrieved 2016-06-30. 
  18. ^ https://bugzilla.mozilla.org/show_bug.cgi?id=909633
  19. ^ "MicrodataJS". Github.com. 2011-12-12. Retrieved 2016-06-30. 

External links[edit]

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