|Purpose||Creating reusable UI components for web applications.||Enhancing React applications with server-side rendering and other optimizations.|
|Creator||Vercel (formerly Zeit)|
|Base Library/Framework||Standalone library||Built on top of React JS|
|Rendering||Client-side rendering (CSR) by default||Server-side rendering (SSR), static site generation (SSG), and CSR|
|Routing||Requires separate library (e.g., React Router)||Built-in file-system-based routing|
|Performance Optimization||Manual optimization required||Automatic code splitting, pre-rendering, and other optimizations|
|SEO||Requires additional setup and optimization||Better out-of-the-box SEO with server-side rendering|
|API Support||Requires separate server or third-party services||Built-in API routes|
|Deployment||Manual setup or third-party services||Optimized for deployment on Vercel (but can be deployed elsewhere)|
|Community||Large and well-established||Growing and increasingly popular|
React JS is used to build reusable UI components and manage their state, while Next.js is a framework that adds server-side rendering, static site generation, and other optimizations to React applications. Next.js also provides built-in support for routing and API routes, which simplifies application development.
The choice between React JS and Next.js depends on your specific project requirements. If you need server-side rendering, better SEO, or other performance optimizations out of the box, Next.js might be a good choice. However, if you prefer a lightweight library with more flexibility, or if your application doesn’t require server-side rendering, React JS could be a better fit.