As a best-selling author, I invite you to explore my books on Amazon . Don't forget to follow me on Medium and show your support. Thank you! Your support means the world! I remember the exact moment I realized JavaScript had a serious problem. I was building a photo filter app. I applied a blur effect to a large image, and the whole page froze. I couldn't scroll, click, or interact. The browser tab turned white, and the operating system eventually asked me to kill it. That’s when I learned that JavaScript runs on a single thread. Any heavy computation blocks the user interface, making the application feel broken. Web Workers came to my rescue. They let me run scripts in the background without touching the main thread. Over time I discovered eight techniques that turned me from a frustrated developer into someone who could handle massive CPU work without breaking a sweat. I want to share them with you in the simplest way possible. The first technique is managing the worker lifecycle.…