Practice
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16 articles · page 1 of 2
A guided entry point into the Web Performance roadmap with curated paths (2 hours / 1 day / 1 week) + exactly what to measure and why it matters in interviews.
A practical introduction to service workers and offline caching strategies, including common pitfalls (stale content, cache invalidation) and when to avoid SWs.
Understand the browser APIs behind performance measurement: PerformanceObserver, long tasks, navigation timing, and capturing Web Vitals in real apps.
How to reduce rendering cost with modern CSS tools: containment, content-visibility, and avoiding expensive effects that trigger heavy paint/layout.
High-signal web performance interview questions with crisp answers: Core Web Vitals, caching, rendering, images, fonts, JS cost, and debugging.
A collection of practical performance fixes with before/after patterns: LCP hero, INP long tasks, CLS shifts, caching, and third-party containment.
How to measure performance like a pro: lab vs field metrics, what to trust, and how to set practical budgets to prevent regressions.
How Next.js (App Router) affects performance: server components, client boundaries, streaming, caching, and avoiding accidental JS bloat.
How third-party scripts hurt performance, how to measure the damage, and pragmatic strategies: defer, isolate, audit, and remove.
