Perceivable
Information and user interface components must be presentable to users in ways they can perceive.
Can they see or hear the content?
Explore Perceivable GuidelinesMastering the WCAG Foundation
The Web Content Accessibility Guidelines (WCAG) are organized under four high-level principles that provide the foundation for Web accessibility: Perceivable, Operable, Understandable, and Robust. Whether you are a developer, designer, or content creator, these are the standards you build toward.
Information and user interface components must be presentable to users in ways they can perceive.
Can they see or hear the content?
Explore Perceivable GuidelinesUser interface components and navigation must be operable across all input methods.
Can they use the interface?
Master Operable ControlsInformation and the operation of the user interface must be understandable to everyone.
Can they make sense of it?
Apply Understandable StandardsContent must be robust enough to be interpreted reliably by a wide variety of user agents.
Will it work with their assistive tech?
Build Robust ImplementationsWhen you're building a new feature, run it through the POUR filter. If it fails even one of these principles, it is fundamentally inaccessible. Think of WCAG not as a checklist, but as a way to ensure your digital product is truly functional for every human being.