the Web Content Accessibility Guidelines

The Web Content Accessibility Guidelines are part of a series of web accessibility guidelines published by the Web Accessibility Initiative of the World Wide Web Consortium, the main international standards organization for the Internet.

Web accessibility is the inclusive practice of ensuring there are no barriers that prevent interaction with, or access to, websites on the World Wide Web by people with disabilities.

The World Wide Web Consortium 's Web Accessibility Initiative is an effort to improve the accessibility of the World Wide Web for people with disabilities.

Introduction to Web Accessibility and W3C Standards by W3C Web Accessibility Initiative (WAI)

They are a set of recommendations for making Web content more accessible, primarily for people with disabilities—but also for all user agents, including highly limited devices, such as mobile phones.

According to many definitions, a disability is an impairment that may be cognitive, developmental, intellectual, mental, physical, sensory, or some combination of these.

In computing, a user agent is software that is acting on behalf of a user.

WCAG 2.0 Theme Song Web Content Accessibility Guidelines - Disability by David MacDonald

WCAG 2.0, was published in December 2008 and became an ISO standard, ISO/IEC 40500:2012 in October 2012.

WCAG 2.1 became a W3C Recommendation in June 2018.