Tag: performance metrics

Explore how the Screen Wake Lock API can improve mobile web UX. Learn how to implement it, handle fallbacks, and review real before/after metrics showing user-task reliability and battery trade-offs.

Learn how to use the PerformanceObserver API to capture real-time performance signals (LCP, CLS, long tasks, and more), instrument production apps safely, and turn observations into actionable improvements with concrete examples and case studies.