Perceivable: Can Everyone Sense the Content?
Text alternatives, captions, and content that adapts.
What Perceivable Means
Perceivable is the first WCAG principle: every user must be able to sense your content, even if they cannot see, hear, or read it the usual way.
Why It Comes First
If someone cannot even perceive a button or an image, nothing else matters. Perceivable is the foundation the other three principles build on.
All lessons in this course
- Perceivable: Can Everyone Sense the Content?
- Operable: Can Everyone Use the Controls?
- Understandable: Is It Readable and Predictable?
- Robust: Will It Work With Their Tech?