Building Accessible Web and Mobile Apps Accessibility is about making software usable for everyone, including people with vision, hearing, motor, or cognitive differences. Good accessibility benefits all users and often improves usability, performance, and even search results. This guide offers practical steps you can apply in both web and mobile apps, from how you structure content to how you test it.
Principles for Accessible Apps Use semantic HTML and a clear heading structure to help screen readers and search engines. Ensure keyboard navigation works with a logical focus order and a visible focus ring. Provide text alternatives: alt text for images, captions for video, and transcripts for audio. Color and contrast matter: choose high contrast and avoid relying on color alone to convey information. Make forms accessible with descriptive labels, accessible error messages, and helpful instructions. Build for mobile: larger touch targets, responsive layouts, and simple gestures. Use ARIA wisely: add roles and attributes only when native semantics fall short, and keep them simple. In practice, aim for consistency. If a feature works on desktop, check that it remains usable on mobile and with assistive tech. When you add new components, document their accessibility behavior and test early.
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