The Web Content Accessibility Guidelines, or WCAG, are the most recognized and referenced set of standards for web accessibility worldwide. Developed by the World Wide Web Consortium (W3C) through its Web Accessibility Initiative (WAI), WCAG provides a comprehensive framework to help make digital content accessible to people with disabilities. These guidelines serve as the foundation for most legal requirements, organizational policies, and best practices related to web accessibility across the globe.

WCAG was first released in 1999, responding to the growing need for clear guidance on making the web usable for everyone, regardless of ability. Since then, the guidelines have evolved through multiple versions to address new technologies, user needs, and digital experiences. Each update reflects input from accessibility experts, people with disabilities, industry leaders, and governments, ensuring that WCAG remains relevant and effective.

As the primary global accessibility standard, WCAG is referenced by laws, regulations, and procurement policies in many countries. Its influence extends beyond legal compliance, shaping how organizations approach inclusive design and user experience. Understanding the evolution of WCAG helps you appreciate its ongoing significance and the reasons it remains central to accessible web development.