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Alt text (alternative text) is a written description of an image used in HTML to provide context for visually impaired users and improve search engine optimization (SEO). Alt text helps screen readers interpret images, making websites more accessible. It also assists search engines in indexing images, enhancing the visibility and relevance of web content.

How do you design for optimal accessibility on different devices and platforms?

Designing for optimal accessibility on different devices and platforms requires a comprehensive approach that considers various factors such as device capabilities, platform guidelines, and user needs. Key considerations include responsive design, which ensures that content adapts to different screen sizes and orientations, and using semantic HTML to provide structure and context to assistive technologies. Additionally, implementing proper color contrast, providing alternative text for images, and using accessible form elements are crucial for users with visual impairments. In terms of navigation, providing clear and consistent menus, headings, and landmarks helps users navigate through the content. Regular usability testing and feedback from users with disabilities are important to continuously improve accessibility.

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What are the considerations for user accessibility in web application development?

User accessibility in web application development is crucial for ensuring that people of all abilities can access and use the application. Some key considerations for user accessibility include proper keyboard navigation, clear and consistent layout, use of alt text for images, captioning for videos, and proper color contrast. In addition, developers should follow web accessibility guidelines such as WCAG 2.0 or 2.1, which provide detailed recommendations for making web content more accessible. By implementing these considerations and guidelines, developers can create web applications that are accessible to a wider audience, including people with disabilities.

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