Web Performance
Speed is a feature readers notice right away. These guides cover Core Web Vitals, lazy loading, browser storage, and offline-ready apps, with the measurements that show whether a change actually helped.
Learn how to build Progressive Web Apps (PWAs) with offline capabilities. This step-by-step guide explains service workers, caching, and best practices for creating reliable, offline-ready web experiences.
Learn the differences between localStorage, sessionStorage, and IndexedDB. This guide explains their use cases, provides practical examples, and shows how to integrate Web Storage APIs in your apps.
Discover how lazy loading can revolutionize your JavaScript applications by optimizing performance and enhancing user experience. Learn best practices, implementation techniques, and when to use this powerful tool.
Learn the top React performance optimization techniques, including memoization, lazy loading, and using the React Profiler. Discover how to improve load times and reduce unnecessary re-renders.
Client-side performance is how fast a page loads and responds in the user's browser. Learn what to measure (LCP, INP, CLS), how to measure it in the field, and 13 practical fixes.