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nextjs.org

Next.js

Next.js is a web development framework that provides a file-system-based routing system and a suite of server-side utilities for managing the request-response cycle. It includes built-in support for data fetching, caching, and revalidation, allowing developers to control how content is rendered and served. The framework offers a centralized configuration system for build-time settings, environment variables, and deployment adapters, alongside a command-line interface for bootstrapping new projects.

The framework covers a wide range of application requirements, including metadata management for search engine optimization, accessibility tools like linting and route change announcements, and performance monitoring through web vitals reporting. It provides specialized components for optimizing images, fonts, and third-party scripts, as well as integrated support for various styling methods such as CSS modules and utility-first frameworks.

Architectural patterns are supported through guides and utilities for authentication, authorization, and session management. Developers can handle errors, manage cookies, and implement custom server-side logic using the framework's core utilities and hooks. The project includes comprehensive documentation and configuration options to support typed development and scalable application design.

Features

  • Extended Fetch APIsAn extended version of the standard web fetch interface that integrates with the framework's caching and revalidation system for server-side data fetching.
  • Application ConfigurationA configuration file for customizing build-time settings, routing, performance optimizations, and environment variables.
  • Form Handling ComponentsA component that enhances standard HTML forms with automatic data submission, loading-state management, and server-side validation integration.
  • Cache Invalidation UtilitiesA server-side function that purges cached data for a specific route path, ensuring that subsequent requests fetch fresh content.
  • CSS ModulesA CSS scoping mechanism that generates unique class names to prevent naming collisions by using files with a specific module extension.
  • Cookie Management UtilitiesA utility for reading and managing HTTP cookies within server-side components, enabling stateful interactions like session management and personalization.
  • Project Scaffolding ToolsA command-line interface for bootstrapping new applications with configurable options for language, styling, linting, and project structure.
  • Metadata Asset ConventionsA standardized metadata file convention for assets like favicons, app icons, and social media images, which are automatically processed and served.