Performance Optimization Basics — Making Your App Fast
Master Core Web Vitals, image optimization, code splitting, lazy loading, and caching strategies to make your app feel instant.
Speed is a feature. Every study on the subject agrees: faster apps get more users, more engagement, and more conversions. Amazon found that every 100ms of latency cost them 1% in sales. Google found that a half-second delay in search results caused a 20% drop in traffic.
Your app doesn't need to be Amazon-fast on day one. But if pages take 5 seconds to load, users leave. If interactions feel sluggish, users lose trust. The good news: the biggest performance wins are usually the easiest to implement.
Let's find and fix the low-hanging fruit.
Core Web Vitals — What Google Measures
Google uses three metrics to judge your site's performance. They affect both user experience and SEO rankings:
LCP (Largest Contentful Paint)
How long until the biggest visible element loads. This is
This lesson is part of the Guild Member curriculum. Plans start at $29/mo.