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Next.JS: migrate from pages to using app router

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Blog by Stephan Moerman
Stephan Moerman
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10 min read
Next.JS: migrate from pages to using app router

Are you a Next.js developer looking to upgrade your application? Discover the key differences between the two routers and their implications on SEO and digital marketing.

Let's dive in and start exploring the powerful features of the Next.js App Router.

Before we get started: key takeaways

  • Next.js 13 introduces App Router built on React Server Component. It means that by default, React renders the whole application server-side. While with Pages Router, React renders the whole application client-side.
  • We can combine server and client components in App Router.
  • With server components, the client-side JavaScript bundle size is reduced, so the initial page loads faster. Read the section Why Server Components? and Rendering in the docs for a more thorough explanation.
  • Anything related to the user's interactivity and React hooks still needs to render on the client side.
  • Think of keeping sensitive information on the server, working with data (fetching data, accessing backend resources directly), or working with large dependencies when choosing the server component.

The importance of routing in web apps

Routing forms the backbone of web applications, enabling users to seamlessly navigate between different sections and functionalities. Whether users are journeying from a homepage to a product listing or smoothly gliding through a single-page application, routing is the invisible thread that weaves their experience together.

One key difference between the Pages Router and the App Router is that the App Router requires creating a separate directory for each page based on the file name, while the Pages Router does not. This change in directory structure can present challenges when migrating to the App Router.

However, the benefits of using the App Router, such as improved performance and optimization, make it worth considering. To ensure a successful migration, I think it's important to remember that if you're migrating a large scale application, you should involve digital marketers and SEO specialists in the process, as they can provide valuable insights on the impact of the migration on search rankings and user experience.

Additionally, I highly recommend you thoroughly test the application before deployment and make sure your test coverage is still as expected. Overall, migrating to the App Router can bring significant performance enhancements and is a recommended step for Next.js applications.

Upgrade your Next.js routing for better performance

It's time to embark on a journey to unlock the full potential of your Next.js applications. Lets upgrade your routing system to the advanced and efficient App Router, leaving behind the limitations of the traditional Pages Router.

This upgrade promises optimized routing capabilities, enhanced scalability, and improved performance.

In this article, we will guide you through the migration process, explore the benefits of the App Router, and discuss the implications on SEO and digital marketing strategies.

Prepare to elevate your Next.js applications to new heights of performance and user experience.

The importance of Next.js routing optimizations

Next.js routing optimization is crucial for improving the performance and scalability of applications. Efficient routing ensures that users are directed to the correct pages quickly and without unnecessary delays. By optimizing the routing process, Next.js can reduce load times, enhance user experience, and improve overall application performance.

Routing optimization involves various techniques, such as code splitting, prefetching, and caching. These techniques help minimize the amount of data that needs to be loaded and processed, resulting in faster page rendering and improved scalability. Additionally, optimizing routing can help reduce the strain on server resources, allowing the application to handle more concurrent requests.

Furthermore, Next.js provides advanced routing capabilities, such as dynamic routing and nested routing, which allow for flexible and organized page structures. This enables developers to create complex applications with ease while maintaining optimal performance.

Understanding the differences: Pages Router vs. App Router

One must understand the differences between Pages Router and App Router in order to make an informed decision about which routing method to utilize for their application.

  1. Pages Router is the traditional method for creating routes in Next.js, mapping files to routes.

  2. App Router, introduced in Next.js 13, utilizes modern React features and supports shared layouts, nested routing, loading states, and error handling.

  3. App Router operates in a new app directory alongside the pages directory for incremental adoption.

The migration from Pages Router to App Router offers improved scalability and performance for Next.js applications. App Router focuses on server-centric routing and takes advantage of React's Server Components architecture, resulting in faster initial load times, reduced bundle sizes, and enhanced SEO.

The migration process involves:

  • Upgrading the environment
  • Creating an 'app' directory
  • Migrating layouts and pages
  • Updating data fetching functions
  • Testing the application before deploying to production

SEO specialists and digital marketers should consider optimizing websites accordingly during the migration to maximize the benefits of the App Router.

Overview image of the App Routers organization by Vercel
Overview image of the App Routers organization by Vercel

The benefits of upgrading to the App Router

The upgrade to the App Router offers improved performance and scalability, making it an advantageous choice for developers.

The App Router, introduced in Next.js version 13, provides optimized routing with support for shared layouts, nested routing, loading states, and error handling. It operates in a new 'app' directory alongside the traditional 'pages' directory, allowing for incremental adoption.

By leveraging React's Server Components architecture, the App Router improves initial load times, reduces bundle sizes, and enhances SEO.

Migrating from the Pages Router to the App Router requires careful navigation to avoid disruptions and potential SEO issues. However, the benefits of improved efficiency and scalability make the migration process worthwhile.

Developers can rely on the Next.js community and official documentation for support and guidance throughout the migration.

Step-by-step migration process from Pages Router to App Router

To successfully migrate from Pages Router to App Router, developers must follow a step-by-step process that involves:

  1. Updating dependencies: Upgrade Next.js, Node.js, and other dependencies to ensure compatibility.

  2. Creating new directories: Alongside the 'pages' directory, create a new directory named 'app' for incremental adoption of the App Router.

  3. Migrating layouts and pages: Move pages from 'pages' to 'app' directory while maintaining file structure consistency. Create a new layout file in the 'app' directory.

Other steps include updating data fetching functions, migrating or updating routing hooks and global styles, testing the application locally, deploying to production, and iterating until all pages are migrated.

Migrating from Pages Router to App Router brings improvements in performance, scalability, and SEO. It is important to understand the differences between the two routers and consider the implications for digital marketing strategies.

The Next.js community and official documentation can provide valuable support during the migration process.

If you're looking for an in-depth guide on how to migrate from Pages Router to App Router, check out this article by Clerk, migrating from Pages Router to App Router.

Testing and deployment: ensuring a smooth transition

In order to ensure a smooth transition during the testing and deployment phase, developers must thoroughly evaluate the functionality and performance of the migrated Next.js application. This evaluation process is crucial to identify any issues or bugs that may have been introduced during the migration from Pages Router to App Router.

Testing should cover all aspects of the application, including layout rendering, nested routing, loading states, and error handling. Performance testing should focus on load times, bundle sizes, and overall responsiveness.

By conducting comprehensive testing, developers can address any issues before deploying the application to the production environment. Additionally, monitoring the application in the production environment is essential to quickly identify and resolve any issues that may arise.

A smooth transition ensures that the migrated Next.js application is functioning optimally and providing an improved user experience.

SEO implications and Digital Marketing strategies

App Router's server-centric routing and React's Server Components architecture can significantly enhance SEO and digital marketing strategies. By migrating from the traditional Pages Router to the App Router in Next.js, websites can experience improved performance and scalability.

Here are three key implications of this migration on SEO and digital marketing:

  1. Reduced load times: The server-centric routing of the App Router and the use of React's Server Components architecture can lead to faster initial load times, improving user experience and reducing bounce rates.

  2. Smaller bundle sizes: App Router's optimized routing and React's Server Components can also reduce JavaScript bundle sizes, enabling faster page rendering and improved SEO rankings.

  3. Improved scalability: With support for shared layouts, nested routing, and error handling, the App Router enhances website scalability, allowing for better management of complex digital marketing campaigns and SEO strategies.

Overall, migrating to the App Router can significantly impact SEO and digital marketing strategies by improving website performance, reducing load times, and enhancing scalability.

Leveraging Next.js community and official documentation

Utilizing the vast resources and extensive knowledge offered by the Next.js community and official documentation can greatly enhance the understanding and implementation of leveraging Next.js for improved development efficiency and scalability.

The Next.js community is a valuable source of information, providing developers with insights, best practices, and solutions to common challenges.

The official documentation offers comprehensive documentation, tutorials, and examples that cover various aspects of Next.js development. By leveraging these resources, developers can gain a deeper understanding of Next.js and its features, enabling them to make more informed decisions and optimize their code for better performance.

Additionally, the community provides a space for networking and collaboration, allowing developers to learn from each other's experiences and share their own insights.

Overall, tapping into the Next.js community and official documentation can greatly enhance the development process and lead to more efficient and scalable applications.

Conclusion: enhancing performance through routing upgrade

The migration from Pages Router to App Router in Next.js is undoubtedly a significant advancement, bringing notable improvements to performance and scalability.

Improved performance: The App Router utilizes modern React features and server-centric routing, resulting in reduced load times and smaller JavaScript bundle sizes. This enhancement enhances the overall performance of Next.js applications.

Enhanced scalability: The App Router supports shared layouts, nested routing, loading states, and error handling, making it easier to manage and scale complex applications. It also integrates with React's Server Components architecture, further improving scalability.

SEO benefits: The migration to the App Router can improve SEO by reducing load times and bundle sizes, ultimately enhancing search engine visibility and rankings for Next.js applications.

Overall, upgrading to the App Router offers numerous benefits, including improved performance, enhanced scalability, and SEO advantages. It is essential for developers to carefully navigate the migration process and take advantage of the Next.js community and official documentation for guidance and support.

Need any help upgrading your application to use the new App Router? Let's connect! I look forward to hearing from you! Let's connect over a quick Google Meet and discuss your project.