What is WCAG 2.1?

WCAG 2.1 (Web Content Accessibility Guidelines 2.1) is a set of guidelines developed by the World Wide Web Consortium (W3C) as part of the Web Accessibility Initiative (WAI). It provides a framework for making web content more accessible to people with disabilities. WCAG 2.1 expands upon WCAG 2.0, adding more success criteria to address the needs of users with cognitive, language, and learning disabilities, as well as users with low vision and mobile users. It is commonly used by web developers, designers, and content creators to ensure that websites, web applications, and other digital content are perceivable, operable, understandable, and robust (the POUR principles).