<b>NextJs File Based Routing A Review</b> Next Js is quickly gaining popularity as a full stack React Js framework and a React framework for Production. Next Js helps us build efficient websites with solid Search Engine Optimization. Next.js, developed by Vercel, has become a popular framework for developing React applications. It provides useful features such as server side rendering, static site generation, and an intuitive file based routing system, revolutionizing how developers construct their applications. This paper delves into the intricacies of the file based routing system in Next.js, discussing its principles, benefits, potential issues, and use cases bolstered by tangible coding examples. NextJs, file based routing, full stack, web development, react router, reactJs, javascript 40-42 Issue-4 Volume-7 Krutika Patil