Code Splitting vs Dynamic Script Loading

Developers should use code splitting when building large-scale single-page applications (SPAs) or complex web apps to minimize initial bundle size and accelerate time-to-interactive meets developers should use dynamic script loading to optimize web performance, especially for large applications where loading all scripts upfront would slow down the initial page render. Here's our take.

Code Splitting

Nice Pick

Developers should use code splitting when building large-scale single-page applications (SPAs) or complex web apps to minimize initial bundle size and accelerate time-to-interactive

Pros

• It's particularly valuable for improving performance on slow networks or mobile devices, and for applications with multiple routes or features that aren't needed immediately
• Related to: javascript, webpack

Cons

• Specific tradeoffs depend on your use case

Dynamic Script Loading

Developers should use Dynamic Script Loading to optimize web performance, especially for large applications where loading all scripts upfront would slow down the initial page render

Pros

• It is essential for implementing lazy loading of non-critical features, such as analytics or third-party widgets, and for building modular applications that load code on-demand, like in single-page applications (SPAs) or progressive web apps (PWAs)
• Related to: javascript, es-modules

Cons

• Specific tradeoffs depend on your use case

The Verdict

Use Code Splitting if: You want it's particularly valuable for improving performance on slow networks or mobile devices, and for applications with multiple routes or features that aren't needed immediately and can live with specific tradeoffs depend on your use case.

Use Dynamic Script Loading if: You prioritize it is essential for implementing lazy loading of non-critical features, such as analytics or third-party widgets, and for building modular applications that load code on-demand, like in single-page applications (spas) or progressive web apps (pwas) over what Code Splitting offers.

The Bottom Line

Code Splitting wins

Developers should use code splitting when building large-scale single-page applications (SPAs) or complex web apps to minimize initial bundle size and accelerate time-to-interactive