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WCAG is the international guideline for digital accessibility. It helps organisations make websites, apps and other digital resources usable for everyone.
Think of people who are blind or partially sighted, deaf or hard-of-hearing users, people with a motor impairment and people with a temporary or situational impairment. WCAG 2.2 is currently the most recent version of this guideline.
WCAG stands for Web Content Accessibility Guidelines. The guideline consists of testable success criteria divided over four basic principles:
Together, these four principles form the basis of digital accessibility.
WCAG also has three levels: A, AA and AAA. In practice, level AA is usually used as the standard, because this level is included in Dutch and European legislation.
| Principle | Level A | Level AA | Total |
|---|---|---|---|
| Perceivable | 9 | 11 | 20 |
| Operable | 14 | 6 | 20 |
| Understandable | 7 | 6 | 13 |
| Robust | 1 | 1 | 2 |
| Total | 31 | 24 | 55 |
WCAG 2.2 is the current version of the guideline. It builds on WCAG 2.1 and adds new success criteria, including on focus, dragging movements, target size, consistent help, redundant entry and accessible authentication.
This makes WCAG 2.2 a better fit for how people use websites and apps today.
WCAG is developed by the W3C, the World Wide Web Consortium. This is the international community that develops web standards.
Within the W3C, WCAG is drawn up and updated through a formal process of drafts, reviews and approval. This results in a widely supported standard that is used internationally as the basis for digital accessibility.
The official WCAG texts are strong in substance, but often difficult to read. In our audits, reports and training, we therefore explain each criterion in plain language: what it means and what to look out for in practice.
This makes the guidelines usable not only for auditors, but also for content specialists, designers, developers, project managers and buyers. As a result, WCAG becomes easier to apply throughout the organisation.
