Nuxt.js is a framework for building server-rendered Vue.js applications. In Nuxt version 3, the framework has been updated to include several new features and improvements, including improved development experience, better performance, and improved support for static sites.

When building a Nuxt application, the framework automatically sets up a development server for you to work on. This server is built on top of webpack-dev-server and includes hot-reloading, which means that your changes will be immediately reflected in the browser without the need to manually refresh the page.

In addition, Nuxt also allows you to easily generate a static version of your application, which can be deployed to a static hosting service such as GitHub Pages or Netlify. This is particularly useful for SEO and performance, since a static site can be easily crawled and indexed by search engines, and can also be served faster to users since the content is pre-built and does not require server-side rendering.

Another feature of Nuxt version 3 is the improved support for static site generation. Nuxt 3 allows you to generate static pages for dynamic routes, which means that you can create pages for each dynamic path in your application, such as individual blog posts or user profiles, and have them pre-built as static pages at build time.

In terms of performance, Nuxt 3 includes several optimizations to improve the speed of your application, such as code splitting, lazy loading, and caching. These optimizations help to reduce the size of the JavaScript bundle and improve the load time of your application, making it faster and more responsive for users.

To sum up, Nuxt 3 is a powerful framework for building server-rendered Vue.js applications. It includes features such as automatic server setup, static site generation, improved development experience and performance optimization making it a convenient choice for building high-performance, SEO-friendly and web-based applications.