Web Performance and Memory Optimization with DevTools

Learn to diagnose slow web applications, resolve JavaScript memory leaks, and optimize rendering speeds using modern browser developer tools.

4.1 (152) ⏱ 46 min 📚 3 lessons 🎧 Audio version

About this course

Slow loading times and unresponsive interfaces frustrate users and hurt search rankings, yet diagnosing these performance bottlenecks can feel like searching for a needle in a haystack. Unseen memory leaks and inefficient JavaScript execution often degrade application performance without throwing a single error. This written course equips you with the fundamental knowledge and practical strategies needed to identify, diagnose, and resolve web performance issues. You will transition from guessing why an application is slow to systematically analyzing and fixing performance bottlenecks in any codebase. What you'll learn: - Understand the core metrics of web performance, including Core Web Vitals and rendering lifecycles - Analyze runtime performance and CPU bottlenecks using Chrome DevTools - Identify and resolve memory leaks and logical flaws in JavaScript code - Apply code-splitting and modern loading patterns to improve initial load times - Optimize resource utilization to ensure smooth experiences across diverse user devices You will begin by learning the foundational terminology of browser rendering and performance metrics before moving into step-by-step written guides on navigating profiling tools. Through clear text explanations and code analysis exercises, you will practice detecting memory leaks and refactoring inefficient code patterns. This course is designed for web developers and beginners eager to write faster, more efficient code, requiring only a basic understanding of HTML, CSS, and JavaScript. Start reading today to build faster web applications that deliver seamless user experiences.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
    Come back anytime, no expiry
  • 📱 Phone or computer
    Works anywhere, any device
  • 💸 30-day refund
    No questions asked
  • Short & focused
    46 min of practical content

Reviews (6)

Abigail Clark NZ
★ 3 · 2025-12-19T03:28:57+00:00

Found it useful for a refresher. Not sure it would be the best starting point for a complete beginner, tbh.

Shlomo Kogan IL Verified learner
★ 5 · 2025-11-21T12:16:57+00:00

This was exactly what I was looking for! The pace was perfect, and the real-world applications discussed are incredibly valuable. Highly recommend!

Grace Kim KE Verified learner
★ 2 · 2025-07-16T22:10:57+00:00

Pretty informative. I liked the practical application examples, though the initial setup took longer than I expected.

Liam O'Connell IE Verified learner
★ 4 · 2025-07-14T17:49:57+00:00

Wow, I'm impressed. The real-world applications shown were super helpful. Made abstract ideas feel tangible. Great value!

Kirsten Petersen DK
★ 4 · 2025-03-23T08:37:57+00:00

Really enjoyed the flow of this. The examples were spot on and helped me grasp the material quickly. Great value.

Joseph Kyeremeh GH Verified learner
★ 5 · 2025-02-09T08:21:57+00:00

Couldn't have asked for a better learning experience. The structure flowed perfectly, and the examples were incredibly relevant. Highly recommend!

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe, or with cryptocurrency. We do not store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 30 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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