Next.JS is a front-end library based on JavaScript. React works well for lightweight apps developed in a short time, SPAs, cross-platform apps, and secure mobile solutions. The above-average performance, better user experience, and rapid feature development make it more appealing to business needs. The most distinct difference is enhanced search engine optimization. So, here is a list of 5 reasons why to convert React to Next.js. Next.Js is a deep.modification of React library.