Choosing the right library or framework for a project is one of the most critical decisions in software development. The tools you select have a direct impact on development speed, performance, scalability, and ultimately, the success of your project. While writing code smoothly contributes to faster delivery, the choice between Next.js vs React.js often leaves developers debating which is better suited for their needs. Both React.js and Next.js are extremely popular in front-end web development, but they serve different purposes. This guide will walk you through their core differences, advantages, disadvantages, and when to choose one over the other.