Modern web application development demands high performance, scalability, SEO readiness, and a streamlined developer experience. In this environment, React.js and Next.js have emerged as two of the most popular and influential technologies. While both belong to the same ecosystem, they serve different roles. React is a frontend UI library, whereas Next.js is a full-fledged framework that builds on React and adds advanced features for production-grade applications. This article provides a detailed and structured comparison of Next.js vs React.js to help developers, architects, and decision-makers select the right technology for their project requirements. 1. Overview 1.1 What is React.js? React.js is…