Tech Insights

WCAG 2.1

Last updated May 18, 2025, generated by Sumble

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).

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What other technologies are related to WCAG 2.1?

WCAG 2.1 Competitor Technologies

WCAG 2.0

An older version of the Web Content Accessibility Guidelines. While similar, WCAG 2.1 is the newer standard.

mentioned alongside WCAG 2.1 in 6% (54) of relevant job posts

WCAG 2.1 Complementary Technologies

NVDA

A free screen reader that assists users with disabilities to access web content, complementing WCAG's accessibility guidelines.

mentioned alongside WCAG 2.1 in 13% (339) of relevant job posts

Section 508

US law requiring accessibility of electronic and information technology developed, maintained, or used by the federal government. Section 508 helps to enforce accessibility. WCAG helps define it.

mentioned alongside WCAG 2.1 in 18% (190) of relevant job posts

WAI-ARIA

A technical specification that enhances the accessibility of web content, particularly dynamic content and custom controls, making it a key complement to WCAG.

mentioned alongside WCAG 2.1 in 17% (186) of relevant job posts