seniorUX Design
What is UX KPI definition and measurement?
Updated May 6, 2026
Short answer
UX KPIs are measurable indicators used to evaluate user experience quality and success.
Deep explanation
UX KPIs include metrics like task success rate, time on task, error rate, retention, and Net Promoter Score (NPS). These metrics help teams quantify user satisfaction and usability improvements over time.
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