1---2name: nuxt3description: Nuxt full-stack Vue framework with SSR, auto-imports, and file-based routing. Use when working with Nuxt apps, server routes, useFetch, middleware, or hybrid rendering.4---56Nuxt is a full-stack Vue framework that provides server-side rendering, file-based routing, auto-imports, and a powerful module system. It uses Nitro as its server engine for universal deployment across Node.js, serverless, and edge platforms.78> Baseline: **Nuxt 4** (4.4.x as of 2026-07). Nuxt 3 reaches end-of-life on 2026-07-31 — treat any Nuxt 3 project as migration work. Nuxt 5 (Nitro v3) is announced but not yet released.9> For Nuxt 4 structure changes (`app/` directory, data-fetching defaults) read [nuxt4-migration](references/nuxt4-migration.md) FIRST; the other references cover concepts shared by Nuxt 3/4.1011## Nuxt 41213| Topic | Description | Reference |14|-------|-------------|-----------|15| Nuxt 4 Changes & Migration | `app/` directory, shallow data refs, TS project references, upgrade path from Nuxt 3 | [nuxt4-migration](references/nuxt4-migration.md) |1617## Core1819| Topic | Description | Reference |20|-------|-------------|-----------|21| Directory Structure | Project folder structure, conventions, file organization | [core-directory-structure](references/core-directory-structure.md) |22| Configuration | nuxt.config.ts, app.config.ts, runtime config, environment variables | [core-config](references/core-config.md) |23| CLI Commands | Dev server, build, generate, preview, and utility commands | [core-cli](references/core-cli.md) |24| Routing | File-based routing, dynamic routes, navigation, middleware, layouts | [core-routing](references/core-routing.md) |25| Data Fetching | useFetch, useAsyncData, $fetch, caching, refresh | [core-data-fetching](references/core-data-fetching.md) |26| Modules | Creating and using Nuxt modules, Nuxt Kit utilities | [core-modules](references/core-modules.md) |27| Deployment | Platform-agnostic deployment with Nitro, Vercel, Netlify, Cloudflare | [core-deployment](references/core-deployment.md) |2829## Features3031| Topic | Description | Reference |32|-------|-------------|-----------|33| Composables Auto-imports | Vue APIs, Nuxt composables, custom composables, utilities | [features-composables](references/features-composables.md) |34| Components Auto-imports | Component naming, lazy loading, hydration strategies | [features-components-autoimport](references/features-components-autoimport.md) |35| Built-in Components | NuxtLink, NuxtPage, NuxtLayout, ClientOnly, and more | [features-components](references/features-components.md) |36| State Management | useState composable, SSR-friendly state, Pinia integration | [features-state](references/features-state.md) |37| Server Routes | API routes, server middleware, Nitro server engine | [features-server](references/features-server.md) |3839## Rendering4041| Topic | Description | Reference |42|-------|-------------|-----------|43| Rendering Modes | Universal (SSR), client-side (SPA), hybrid rendering, route rules | [rendering-modes](references/rendering-modes.md) |4445## Best Practices4647| Topic | Description | Reference |48|-------|-------------|-----------|49| Data Fetching Patterns | Efficient fetching, caching, parallel requests, error handling | [best-practices-data-fetching](references/best-practices-data-fetching.md) |50| SSR & Hydration | Avoiding context leaks, hydration mismatches, composable patterns | [best-practices-ssr](references/best-practices-ssr.md) |5152## Advanced5354| Topic | Description | Reference |55|-------|-------------|-----------|56| Layers | Extending applications with reusable layers | [advanced-layers](references/advanced-layers.md) |57| Lifecycle Hooks | Build-time, runtime, and server hooks | [advanced-hooks](references/advanced-hooks.md) |58| Module Authoring | Creating publishable Nuxt modules with Nuxt Kit | [advanced-module-authoring](references/advanced-module-authoring.md) |
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