Chatbot Accessibility

The practice of designing chatbots and conversational user interfaces (CUIs) to be usable by people with disabilities. Chatbot accessibility presents unique challenges compared to traditional web accessibility because CUIs involve dynamic, dialogue-based interactions rather than static page content, may combine multiple modalities (text, voice, GUI widgets), and are deployed across diverse channels (web, messaging apps, smart speakers). Key accessibility considerations include: providing full text alternatives for voice-only interfaces, ensuring screen reader compatibility for text-based chatbots, allowing adequate response time for users with cognitive or motor impairments, supporting input modality switching mid-conversation for users with speech impairments, using plain language and limited choices for users with cognitive disabilities, and avoiding sensory triggers for users with mental health conditions or autism. WCAG guidelines require reinterpretation for conversational contexts, and dedicated accessibility guidance for CUIs remains an emerging area of research.