What is code splitting in Next.js?

What is code splitting in Next.js?

Code splitting in Next.js is a technique that allows you to split your JavaScript code into smaller chunks, which can be loaded on demand. This improves the performance of your application by reducing the initial load time.

How does it work in Next.js?

Next.js automatically splits your code based on the pages you create. Each page only loads the necessary JavaScript for that page, which means users don't have to download the entire application upfront.

Can I control how code splitting works?

Yes, you can use dynamic imports to control code splitting more granularly. This allows you to load components only when they are needed, further optimizing performance.

Are there any downsides to code splitting?

While code splitting improves load times, it can introduce a slight delay when loading additional chunks. However, this is often outweighed by the benefits of faster initial loads.

What tools can I use to analyze code splitting in my Next.js app?

You can use the Webpack Bundle Analyzer or the built-in Next.js analysis tools to visualize and analyze your code splitting.