GetWiki

{{Short description|Project for creating structured data}}

factoids

Schema.org is a reference website that publishes documentation and guidelines for using structured data mark-up on web-pages (called microdata). Its main objective is to standardize HTML tags to be used by webmasters for creating rich results (displayed as visual data or infographic tables on search engine results) about a certain topic of interest.WEB,weblink About schema.org initiative, W3C, 28 June 2018, It is a part of the semantic web project, which aims to make document mark-up codes more readable and meaningful to both humans and machines.

History

Schema.org is an initiative launched on June 2, 2011, by Bing, Google and Yahoo!WEB,weblink Home - schema.org, schema.org, 2019-04-01, Introducing schema.org: Search engines come together for a richer web, Google blog, 2 June 2011Introducing Schema.org: Bing, Google and Yahoo Unite to Build the Web of Objects, Bing blog, 2 June 2011 (operators of the world's largest search engines at that time)WEB,weblink Top 5 Search Engines from Oct to Dec 10, StatCounter, 17 January 2011, to create and support a common set of schemas for structured data markup on web pages. In November 2011, Yandex (whose search engine is the largest in Russia) joined the initiative.WEB,weblink Yandex joins Google, Yahoo! and Bing to collaborate on Schema.org - TechCrunch, nate451, 6 July 2017, WEB,weblink Yandex now supports schema.org markup, blog.schema.org, 6 July 2017, They propose using the schema.org vocabulary along with the Microdata, RDFa, or JSON-LD formatsWEB,weblink Getting Started - schema.org, schema.org, 6 July 2017, to mark up website content with metadata about itself. Such markup can be recognized by search engine spiders and other parsers, thus granting access to the meaning of the sites (see Semantic Web). The initiative also describes an extension mechanism for adding additional properties.WEB,weblink Extending Schemas, 2011-06-02, schema.org, 2 June 2011, In 2012, the GoodRelations ontology was integrated into Schema.org.WEB,weblink Good Relations and Schema.org, blog.schema.org, 6 July 2017, Public discussion of the initiative largely takes place on the W3C public vocabularies mailing list.WEB,weblink W3C web vocabularies mailing list, 2013-07-22, w3.org, 22 July 2013, Much of the vocabulary on Schema.org was inspired by earlier formats, such as microformats, FOAF, and OpenCyc.WEB,weblink FAQ, schema.org, 2 June 2011, Microformats, with its most dominant representative hCard, continue (as of 2015) to be published widely on the web, where the deployment of Schema.org has strongly increased between 2012 and 2014.WEB,weblink 2015-04-13, 3.1. Extraction Results from the December 2014 Common Crawl Corpus, 2015-04-13, Web Data Commons – RDFa, Microdata, and Microformat Data Sets -- Extracting Structured Data from the Common Web Crawl, In 2015,WEB,weblink 2015-03-09, Easier website development with Web Components and JSON-LD, Google began supporting the JSON-LD format, and as of September, 2017 recommended using JSON-LD for structured data whenever possible.WEB,weblink 2017-09-13, Introduction to Structured Data, WEB,weblink 2019-09-06, How to add Schema Markup Data JSON-LD, YouTube, Despite the advantages of using Schema.org, adoption remained limited as of 2016. A survey in 2016 of 300 US-based marketing agencies and B2C advertisers acrossindustries showing only 17% uptake.WEB,weblink Prioritize Search To Maximize ROI Of Marketing, 2017-01-01, Such validators as the soon-to-be-deprecated Google Structured Data Testing Tool,WEB,weblink Structured Data Testing Tool, www.google.com, 25 August 2020, or more recentWEB,weblink The Rich Results Test is out of beta, webmasters.googleblog.com, 25 August 2020, Google Rich Results Test Tool,WEB,weblink Rich Result Tool, www.google.com, 28 July 2020, Yandex Microformat validator,WEB,weblink Микроразметка — Яндекс.Вебмастер, webmaster.yandex.ru, 6 July 2017, and Bing Markup ValidatorWEB,weblink Bing - Markup Validator, www.bing.com, 6 July 2017, can be used to test the validity of the data marked up with the schemas and Microdata. More recently, Google Search Console (formerly webmaster tools) has provided a report section for unparsable structured data. If any Schema code on a website is incorrect, it will show in this report.WEB,weblink 2019-12-04, What is Schema Mark Up and How Can it Benefit Your Business, 2021-08-18, 2021-08-18,weblink dead, Some schema markups such as Organization and Person are commonly used to influence search results returned by Google's Knowledge Graph.WEB, Specify your social profiles to Google,weblink Google Developers, 2015-06-25,

Schema Types

There are a number of items that a web page can be marked up with using a Schema, with examples including:

• Article
• Breadcrumb
• Course
• Event
• FAQ
• LocalBusiness
• Logo
• Movie
• Product
• Recipe
• Review
• Video

Examples

Microdata

The following is an exampleWEB,weblink Getting Started - schema.org, schema.org, 6 July 2017, of how to mark up information about a movie and its director using the Schema.org schemas and microdata. In order to mark up the data, the attribute itemtype along with the URL of the schema is used. The attribute itemscope defines the scope of the itemtype. The kind of the current item can be defined by using the attribute itemprop. (born August 16, 1954)

RDFa 1.1 Lite

(born August 16, 1954)

JSON-LD

{ }

References

{{reflist|30em}}

External links

• Homepage URL: weblink

{{Semantic Web}}