Optimize code splitting with Wepback

You can customize the Webpack configuration in Next.js to suit your project's specific needs. This can be particularly useful for things like optimizing your bundle size, adding loaders for different file types, or making other advanced adjustments.

In this example, we're using the webpack property to modify the Webpack configuration and enable SplitChunksPlugin to optimize code splitting.

module.exports = {
  webpack: (config, { isServer }) => {
    if (!isServer) {
      config.optimization.splitChunks = {
        cacheGroups: {
          vendor: {
            test: /[\\/]node_modules[\\/]/,
            name: 'vendor',
            chunks: 'all',

    // Add other customizations here...

    return config;

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