Move heavy JavaScript off the main thread with web workers and watch your INP score drop. Practical examples with Comlink, Partytown, transferable objects, and SharedArrayBuffer — plus how to measure the real impact on Core Web Vitals.
Service workers give you programmatic control over browser caching, turning repeat visits into near-instant page loads. Learn the five core caching strategies, implement them with Workbox 7, and see how service worker caching stacks with HTTP caching to boost Core Web Vitals.
Diagnose and fix poor INP scores caused by JavaScript long tasks. Covers scheduler.yield(), the LoAF API, DevTools profiling, framework-specific fixes for React, Angular, and Vue, plus a complete before-and-after verification workflow.