The Web Content Accessibility Guidelines (WCAG), created by the World Wide Web Consortium Opens in New Window(W3C), are a set of web standards that ensure the Internet is a more inclusive and accessible space for all. They provide a set of formal guidelines for site owners, authors and developers to create accessible web content for users of all abilities.
In 2018, the W3C published WCAG 2.1, which added additional standards to WCAG 2.0, first published in 2008. WCAG has three levels of conformance categorized, Level A, Level AA and Level AAA. Level A indicates a lower level of conformance, while AAA indicates the highest level. WCAG compliance guidelines apply to dynamic content, multimedia, mobile content and non-web information and communications technologies.