The Web Content Accessibility Guidelines (WCAG) are a set of internationally recognized standards developed and maintained by the World Wide Web Consortium (W3C). WCAG provides guidelines and testable criteria for making web content more accessible to people with disabilities.

Many public institutions of higher education in the US cite a version of WCAG as their standard for web accessibility. WCAG 2.1, Level AA is the current standard of record at the University of Iowa.

WCAG consists of 13 guidelines for accessible technology, each of which is supported by testable success criteria. The guidelines are organized into three compliance levels, A, AA (double-A), and AAA (triple-A). Each level addresses a set of accessibility issues based on their potential impact on end users. The guidelines may be applied to a wide variety of technologies. The most common implementations of WCAG are versions 2.0 and 2.1, Level AA. The W3C released WCAG 2.2 as an official recommendation on October 5, 2023