WCAG stands for Web Content Accessibility Guidelines – the international web accessibility standard published by the W3C. It is organized into three conformance levels: A, AA, and AAA.
Which level is legally required?
The EAA and the European standard EN 301 549 require at minimum WCAG 2.1 Level AA. A11yBridge checks against these requirements by default.
What does A11yBridge specifically check?
- Alt text – Do all images have text alternatives? (WCAG 1.1.1)
- Color contrast – Is the contrast between text and background sufficient? (WCAG 1.4.3)
- Keyboard navigation – Can the entire site be used without a mouse? (WCAG 2.1.1)
- Form labels – Are all form fields correctly labeled? (WCAG 1.3.1)
- Document structure – Is the heading hierarchy correct? (WCAG 1.3.1)
- Links – Do all links have meaningful text? (WCAG 2.4.4)