ARIA – Accessible Rich Internet Applications
ARIA (Accessible Rich Internet Applications) is a W3C specification that enhances the accessibility of dynamic web content and complex UI components for users with disabilities. It provides additional semantic information via roles, states, and properties that are especially important for screen readers.
ARIA is essential for making interactive, JavaScript-driven elements – such as modals, tabs, accordions, or menus – understandable and navigable for assistive technologies.
Why ARIA Is Important
- Improves accessibility of non-semantic or dynamic elements
- Provides contextual meaning to screen reader users
- Helps meet WCAG 2.1 / 2.2 accessibility guidelines
- Crucial for modern JS frameworks (e.g., React, Vue, Angular)
Key ARIA Roles & Attributes
| ARIA Role/Attribute | Description |
|---|---|
| role="dialog" | Defines a modal dialog |
| role="tablist" | Labels a group of tabs |
| aria-expanded | Indicates if a collapsible section is open |
| aria-label | Provides a label for screen readers |
| aria-live | Announces dynamic changes automatically |
Best Practices for Using ARIA
- Use ARIA only when native HTML lacks accessibility
- Do not override semantic HTML unnecessarily
- Maintain a correct hierarchy (e.g., tablist → tab → tabpanel)
- Keep ARIA values in sync with visible UI states
- Test regularly using screen readers and keyboard navigation
You can find out more about our services in the area of digital accessibility here.
