React vs. Next.js: An In-Depth Comparison and Tips for Building Multilingual Applications

Building a multilingual app is a key factor in attracting and serving users across many countries and regions. Using Next.js and React makes this effective and easy to achieve. Below are some tips for building a high-quality multilingual app.

1. What Are React and Next.js?

First, let's learn about React and Next.js.

1.1. What Is React

React is a popular JavaScript library developed by Facebook, used to build interactive user interfaces (UI) within web applications. Based on the principle of "one-way data flow," React lets you build dynamic, reusable UI components. It optimizes application performance by updating and re-rendering only the parts that need to change when data changes. This mechanism is called the "Virtual DOM" (Virtual DOM).

React also works well with other libraries and technologies and can be easily integrated into existing web development systems. It supports robust programming principles, such as splitting the UI into independent components, making it possible to develop highly maintainable code.

1.2. What Is Next.js

Cre: Kofi

Next.js is a framework for developing web applications using React, with a particular focus on building complex, high-performance applications. It helps you build SSR (server-side rendering) applications easily and effectively. As a result, websites are rendered on the server before being sent to the user's browser, which improves page load times and optimizes SEO.

Next.js provides a feature that simplifies application routing and supports functions such as automatic image optimization and code splitting. It also makes it easy to handle environment-related configuration. Next.js provides a convenient development environment for easily building multilingual applications and carrying out development-related tasks.

1.3. Summary

In summary, React is a library for building interactive user interfaces, and Next.js, as a complement to React, is a powerful framework for developing high-performance, multilingual web applications.

2. Comparing React and Next.js

2.1. Comparison Table

The comparison table for React and Next.js is as follows.

2.2. What Is the Difference Between React and Next.js?

React and Next.js are both technologies widely used to develop web applications with JavaScript. However, React is a single library specialized in building user interfaces (UI). Next.js, on the other hand, is a framework based on React that provides more advanced features and additional tools.

React is a library developed by Facebook and is mainly used to build UIs. Its data flow is one-directional, and it uses a virtual DOM to perform efficient re-rendering. React supports client-side rendering (CSR), achieving a dynamic UI to improve user experience. However, React itself does not support server-side rendering (SSR), so a separate library must be incorporated if you need that feature.

Next.js is a framework built on top of React, and is mainly suited to developing complex web applications. Next.js makes it easy to achieve SSR, which can improve an application's SEO and page load times. It also has built-in routing, making it easy to manage transitions between pages. Furthermore, it supports static site generation, which contributes to improved content performance.

For features developers commonly use, such as environment configuration, image optimization, and multilingual support, Next.js also provides convenient tools and settings. This enables faster, more efficient development.

In summary, React mainly focuses on building UIs and supports CSR. Next.js, on the other hand, extends React and offers more features and advanced functionality, with particular strengths in SSR, routing, and static site generation.

3. Tips for Building a Multilingual App with React and Next.js

Building a multilingual application with Next.js and React can be challenging, but the tips below will help you create an app that is flexible and easy to maintain.

3.1. Use a Multilingual Support Library

Use a multilingual support library such as next-i18next to manage the languages and responses within your application. This avoids creating a complex structure and keeps your code more readable.

3.2. Separate Language from the Interface

Avoid placing text directly in your React source code. Instead, manage your responses using separate language files. This lets you easily change and update the language without modifying the original source code.

3.3. Provide Sample Language Data

Provide sample language data so that translators and the community can understand the context and use the correct responses when working on translations.

3.4. Use Language Formatting Techniques

Don't embed usernames or dynamic values directly into your responses. Instead, use language formatting techniques to insert dynamic values into responses.

3.5. Test Your Languages

Test each language to make sure all responses display correctly and that no errors occur in the application.

3.6. Support Special Characters and Languages

Make sure your application supports special characters and languages, such as Unicode. This ensures a good experience for all users.

3.7. Use Neutral Images and Videos

When using images and videos in your application, use neutral images and videos without text content to make multilingual support easier.

3.8. Optimize Performance

Make sure building a multilingual application doesn't negatively affect your application's performance. Optimize language loading and formatting alongside performance.

3.9. Test Across Languages and Browsers

Test your application across various browsers and languages to make sure it works smoothly on every platform.

3.10. Keep Your Code Clean and Readable

Regardless of your application's size, keep your code clean and readable so that it's easy to maintain and extend.

In summary, building a multilingual application is complex, but by leveraging Next.js and React, you can create a flexible, scalable application that serves

diverse users around the world.

4. FAQ

5. Conclusion

This article introduces tips for building a multilingual application using Next.js and React. Depending on your application's purpose and the languages you use, choose the right one to take advantage of its strengths. For other web development options, please refer to the resources below.

MiichiSoft is a Vietnamese software company specializing in multilingual applications. The MiichiSoft team has achieved success by leveraging Next.js and React. With over 10 years of software development experience, we serve as a fantastic technology bridge connecting the Vietnamese and Japanese markets, and MiichiSoft has solidified its position in the international market. If you're interested in application development using Next.js and React, please feel free to contact us. We look forward to consulting with you.