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Junior

What do you understand by interface accessibility?

sobes.tech AI

Answer from AI

Accessibility (A11y) refers to designing and developing web interfaces in such a way that they can be used by the widest possible range of people, regardless of their physical, sensory, or cognitive characteristics. This includes people with visual, hearing, motor impairments, cognitive disorders, epilepsy, as well as those using assistive technologies (screen readers, keyboard navigation, etc.), those with temporary limitations (e.g., broken arm), or those in conditions that hinder perception (bright sunlight, noise).

Key principles of accessibility:

  • Perceivability: Information and user interface components must be presented in a way that they can be perceived by any user, regardless of the technologies or sensory limitations they have.
    • Alternative text for images.
    • Subtitles and transcripts for audio and video.
    • Sufficient contrast between text and background.
    • Ability to resize text without loss of functionality.
  • Operability: The user interface and navigation elements must be operable, meaning the user must be able to interact with them.
    • Accessibility of all functions via keyboard.
    • Adequate space between clickable elements.
    • No time restrictions on task completion, except in critical cases.
  • Understandability: Information and the operation of the user interface should be understandable.
    • Predictable navigation.
    • Clear instructions and error messages.
    • Use of simple and understandable language.
  • Reliability: Content should be reliable enough to be interpreted by various program agents, including assistive technologies.
    • Compliance with web standards (HTML, CSS).
    • Use of ARIA roles and attributes (Accessible Rich Internet Applications).

Implementation of accessibility includes:

  • Using semantic HTML.
  • Proper use of alt attributes for images, title for links.
  • Ensuring keyboard navigation and focus indicators.
  • Supporting screen readers through ARIA attributes.
  • Testing with automated tools (Lighthouse, Axe) and manual testing with keyboard and screen reader.
  • Considering accessible design patterns during development.

Accessibility is not only a legal requirement in many countries but also a good business case (expanding the user audience) and an ethical principle.

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