React Performance Optimizations: How to Fix a Slow App

Veröffentlicht am: 27 Januar 2026
auf dem Kanal: Shruti Kapoor

36,333

1.6k

Watch how to optimize images -    • Image Optimizations: Performance Optimizat...

Learn essential techniques to optimize the performance of your React web app using Core Web Vitals.

In this comprehensive tutorial, I'll walk you through optimizing a real Video Player component from scratch, covering everything from bundle optimization to advanced React performance patterns while actually measuring the performance improvements.

VIDEO REFERENCES
Source code: https://github.com/shrutikapoor08/vid...
16 useEffect mistakes -    • useEffect Is Making Your App Slow. Fix it ...
TanStack Start Crash Course -    • React Crash Course: Build Netflix in React...
Optimize LCP: https://web.dev/articles/optimize-lcp

TOOLS & COMMANDS USED:
npx depcheck
React Profiler
React Compiler
React 19 Performance Tracks
Vite Bundle Analyzer
Chrome DevTools Performance Tab

RECOMMENDED RESOURCES
1. React Course for beginners: https://www.oreilly.com/library/view/...
2. Practice React Interviews: https://www.greatfrontend.com/questio...
3. AI-Ready FullStack Developer Course: https://scrimba.com/fullstack-path-c0...

FREE RESOURCES
1. FREE React Interview Questions Book: https://bit.ly/free-react-guide
2. Top 5 in React and AI Every Week: https://bit.ly/shruti-newsletter

GET IN TOUCH
1. Book a 1:1 - https://topmate.io/shrutikapoor08
2. Join our Discord: http://bit.ly/shruti-discord

SOCIALS
X / Twitter:   / shrutikapoor08
INSTAGRAM:   / techcreatorshrutikapoor
TIKTOK:   / techcreatorshrutikapoor
Web: https://shrutikapoor.dev/
Support me on Patreon:   / shrutikapoor

CHAPTERS
0:00 Intro
0:44 Current state of the app
6:21 Step 1: Bundle optimizations
9:05 Step 2: React optimizations
21:48 Step 3: Server Side Rendering
24:52 Step 4: Asset Optimizations
30:18 Final demo

#react #nextjs #performance #webdevelopment
Sub: 37382

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