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📖 W3C Core Standard

Accessibility starts with four simple words.

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.

P

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 Guidelines
O

Operable

User interface components and navigation must be operable across all input methods.

Can they use the interface?

Master Operable Controls
U

Understandable

Information and the operation of the user interface must be understandable to everyone.

Can they make sense of it?

Apply Understandable Standards
R

Robust

Content must be robust enough to be interpreted reliably by a wide variety of user agents.

Will it work with their assistive tech?

Build Robust Implementations

SimpleAccess Insight: The POUR Filter

When 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.