From React to Next.js: A Comparative Review of Performance, SEO, and Developer Experience

JavaScript front-end frameworks have evolved from libraries such as React.js, initially released in 2013 by Facebook as a client-rendered UI library, to robust frameworks such as Next.js (Vercel, 2016), which integrates static generation and SSR. While React’s widespread adoption as the second most used web framework (sharing around 40% of the market) speaks to its worth in crafting dynamic UI, its purely client-side foundation has performance and SEO shortcomings. Next.js was developed as a solution to fix these issues; it improves load times and SEO performance by integrating SSR/SSG, prefetching, and caching by default. Whereas performance and SEO have been empirically quantified in current research, an existing lack of a systematic integration of developer-focused and user-centric dimensions remains. This review paper addresses that gap by surveying literature on key aspects of React and Next, including performance, SEO, developer experience, scalability, routing paradigms, and deployment. Its main objective is to clarify how each framework optimizes both developer workflows and end-user outcomes. Trends show that Next.js is generally faster for initial page load and better for SEO outcomes due to its SSR/SSG optimization, while React is still most suitable for extremely interactive, client-oriented applications. On the build front, Next’s interlocked conventions (e.g., file-based routing and built-in APIs) make workflows easier and even make it easier to migrate from React, while React simplicity offers liberty. In general, this assessment suggests Next.js will tend to excel in performance/SEO-sensitive scenarios while React flexibility serves complex single-page applications, offering references to guide framework choice among developers as well as researchers.