WCAG

W3C, Cambridge, Massachusetts, United States

The Web Content Accessibility Guidelines (WCAG) are an international standard developed by the W3C that defines how to make web content, including text and media, accessible to people with disabilities.

They are technology-agnostic and structured around four core principles (perceivable, operable, understandable, and robust) and define testable success criteria with three conformance levels (A, AA, AAA) used to evaluate accessibility compliance.

WCAG is widely adopted in legal and regulatory frameworks as a baseline for accessible websites and applications.

According to our data, WCAG ranks 47th among the standards we track.
It is detected on 0.02% of all websites.

It is especially popular in Spain, appearing on 0.1% of all websites in the country.

Statistics based on 4M+ analyzed websites. About this data

📊 Rankings and Market Share

🏆 WCAG Awards

⚡ Sites Using WCAG

We have data on 673 websites that use WCAG. Here is a list of some of the top ranked ones.

The highest rated site using WCAG is seg-social.es.

#WebsiteRankCountryLanguage
1 seg-social.es #2,468 Spain Spanish
2 metoffice.gov.uk #4,339 United Kingdom English
3 auth.gr #7,253 Greece Greek
4 efe.com #8,218 Spain Spanish
5 ign.es #9,714 Spain European Spanish
6 sprintesport.it #10,446 Italy Italian
7 hkma.gov.hk #13,577 Hong Kong English
8 py.gov.in #14,486 India English
9 gesundheit.gv.at #15,184 Austria German
10 lancashire.gov.uk #17,319 United Kingdom English
11 ine.pt #17,666 Portugal English
12 pseb.ac.in #19,814 India English
13 gujgov.edu.in #20,943 India English
14 fundae.es #21,486 Spain Spanish
15 hkeaa.edu.hk #22,215 Hong Kong Chinese
16 unlu.edu.ar #23,276 Argentina Spanish
17 tremendous.com #26,285 United States English
18 hellenicparliament.gr #33,401 Greece Greek
19 becaseducacion.gob.es #35,460 Spain Spanish
20 itvcita.com #36,308 Spain Spanish

📈 Usage Statistics

Most of the sites that use WCAG:

Most of the sites using WCAG are from Spain, the United States, and Hong Kong.

  • Spain 21%
  • United States 18.2%
  • Hong Kong 14.3%
  • Greece 10%
  • Italy 8.9%
  • United Kingdom 5.7%
  • India 4.1%
  • Japan 1.9%
  • Portugal 1.9%
  • Other 14%

Most WCAG users speak English, Spanish, or Greek.

  • English 44.4%
  • Spanish 19.7%
  • Greek 8.9%
  • Italian 8.5%
  • Chinese 7.6%
  • Japanese 1.9%
  • Catalan 1.9%
  • Portuguese 1.8%
  • German 1.2%
  • Other 4.1%

WCAG is especially popular on .com, .es, and .gov.hk top-level domains.

  • .com 25.7%
  • .es 12.3%
  • .gov.hk 8.8%
  • .org 8.3%
  • .gr 7.9%
  • .it 6.7%
  • .net 2.8%
  • .gov.in 1.9%
  • .eu 1.8%
  • Other 23.8%

The primary market segments for websites utilizing WCAG include government and military, business, and education and reference.

  • Government/Military 19.1%
  • Business 15.4%
  • Education/Reference 11.7%
  • Health 8.6%
  • Public Information 7.4%
  • Marketing/Merchandising 6.2%
  • Real Estate 4.3%
  • Internet Services 3.7%
  • General News 3.7%
  • Other 19.9%

🔢 WCAG Versions

The most widespread version of WCAG is 2, used by 65.1% of sites where versions were detected.

  • 2 65.1%
  • 1 34.9%

🔢 WCAG Levels

The most common level of WCAG is AA, used by 77.1% of sites where levels were detected. In addition, 14.4% of sites use WCAG AAA, and 12% use WCAG A.

  • AA 77.1%
  • AAA 14.4%
  • A 12%

🕵️ Similar Technologies

These are some of the best WCAG alternatives.

RankName
1
CSS
Cambridge, Massachusetts, United States

A stylesheet language used to control the presentation of HTML and XML documents, defining layout, colors, typography, and responsive behavior across different devices.
2
HTML
Cambridge, Massachusetts, United States

A markup language used to create web pages and is the de facto standard for documents displayed in web browsers.
3
ARIA
Cambridge, Massachusetts, United States

A technical specification from the W3C Web Accessibility Initiative that defines how to improve the accessibility of web content and applications, particularly those with dynamic interfaces and custom controls.
5
JSON

A lightweight, language-independent data exchange format derived from JavaScript and used to structure and transmit data between systems.
7
RSD
Wesley Hills, New York, United States

An XML format that allows client software to discover services provided by web publishing systems.

🆚 Compare Alternatives

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💬 Frequently Asked Questions

What is the company behind WCAG?

WCAG is owned by World Wide Web Consortium, Inc., headquartered in Cambridge, Massachusetts, United States.

Which country uses WCAG the most?

The majority of WCAG users are from Spain.

Who uses WCAG?

According to our data, WCAG is used on hundreds of sites, including such established ones as seg-social.es, metoffice.gov.uk, and auth.gr.

Is WCAG used on government websites?

Yes, for example, it is used by metoffice.gov.uk, hkma.gov.hk, and py.gov.in. Overall, we found WCAG on 59 government sites in Hong Kong, 13 in India, and 2 in the United States.

Do academic institutions use WCAG?

Yes. The most prominent of these are pseb.ac.in, gujgov.edu.in, and hkeaa.edu.hk.

What are the alternatives to WCAG?

Alternatives and possible competitors to WCAG may include ARIA, CSS, and HTML.

👉 See Also

🗃️ About This Data