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Content must be robust enough that it can be interpreted by a wide variety of user agents, including assistive technologies.
The Robust principle ensures that content can be reliably interpreted by a wide variety of user agents, including assistive technologies. This means that as technologies advance, the content should remain accessible. Content should be written using valid, well-formed code and should work with current and future assistive technologies.
If content is not robust, it may not work with assistive technologies or future technologies. This principle ensures that content remains accessible as technology evolves. Invalid code, missing attributes, and improper markup can cause assistive technologies to fail, completely excluding users who depend on them. Robust content is future-proof and works across different platforms and devices.
Impact: There are over 1,000 different assistive technologies available, including screen readers, voice recognition software, switch controls, and more. Robust code ensures compatibility with this diverse ecosystem of tools that people with disabilities rely on.
Using semantic HTML5 elements (header, nav, main, article, section, footer)
Providing proper ARIA labels and roles when needed
Ensuring all form controls have associated labels
Validating HTML to catch markup errors
Testing with screen readers and other assistive technologies
Following W3C standards and recommendations