ux-principles

Nielsen's heuristics are 10 foundational principles for assessing interface usability, including system feedback, user control, error prevention, and consistency. Apply them by auditing your interface against each heuristic, documenting violations, and prioritizing improvements that reduce user friction and cognitive load.

Usability testing measures how effectively real users complete tasks and perceive your interface; accessibility compliance ensures your interface meets WCAG standards for users with disabilities. Both are essential—usability testing finds task-level problems, while accessibility compliance removes structural barriers.

User research methods include interviews, surveys, observations, and persona development to understand user needs and behaviors. Research outputs—personas, journey maps, and insights—guide interface design decisions and validate that your solutions address actual user problems.

Yes. Information architecture organizes content and navigation; journey mapping visualizes user interactions across touchpoints. Together, they ensure your product structure aligns with how users think about and navigate your experience.

Key usability metrics include task completion rate, time on task, error rate, and user satisfaction scores. These metrics quantify how well your interface enables users to achieve goals and provide baseline data to measure improvements after design changes.

Follow WCAG guidelines covering perceivability, operability, understandability, and robustness. Conduct accessibility audits, test with assistive technologies, and validate that color contrast, keyboard navigation, semantic structure, and alt text support users with visual, motor, and cognitive disabilities.