# Pages > Nuxt Kit provides a set of utilities to help you create and use pages. You can use these utilities to manipulate the pages configuration or to define route rules. ## `extendPages` In Nuxt, routes are automatically generated based on the structure of the files in the `app/pages` directory. However, there may be scenarios where you'd want to customize these routes. For instance, you might need to add a route for a dynamic page not generated by Nuxt, remove an existing route, or modify the configuration of a route. For such customizations, Nuxt offers the `extendPages` feature, which allows you to extend and alter the pages configuration. Watch Vue School video about extendPages. ### Usage ```tstwoslash import { createResolver, defineNuxtModule, extendPages } from '@nuxt/kit' export default defineNuxtModule({ setup (options) { const { resolve } = createResolver(import.meta.url) extendPages((pages) => { pages.unshift({ name: 'prismic-preview', path: '/preview', file: resolve('runtime/preview.vue'), }) }) }, }) ``` ### Type ```ts function extendPages (callback: (pages: NuxtPage[]) => void): void ``` ### Parameters **callback**: A function that will be called with the pages configuration. You can alter this array by adding, deleting, or modifying its elements. Note: You should modify the provided pages array directly, as changes made to a copied array will not be reflected in the configuration.

Property	Type	Required	Description
`name`	`string`	`false`	The name of the route. Useful for programmatic navigation and identifying routes.
`path`	`string`	`false`	The route URL path. If not set, Nuxt will infer it from the file location.
`file`	`string`	`false`	Path to the Vue file that should be used as the component for the route.
`meta`	`Record < string , any >`	`false`	Custom metadata for the route. Can be used in layouts, middlewares, or navigation guards.
`alias`	`string[] \| string`	`false`	One or more alias paths for the route. Useful for supporting multiple URLs.
`redirect`	`RouteLocationRaw`	`false`	Redirect rule for the route. Supports named routes, objects, or string paths.
`children`	`NuxtPage[]`	`false`	Nested child routes under this route for layout or view nesting.

## `extendRouteRules` Nuxt is powered by the [Nitro](https://nitro.build/) server engine. With Nitro, you can incorporate high-level logic directly into your configuration, which is useful for actions like redirects, proxying, caching, and appending headers to routes. This configuration works by associating route patterns with specific route settings. You can read more about Nitro route rules in the [Nitro documentation](https://nitro.build/guide/routing#route-rules). Watch Vue School video about adding route rules and route middelwares. ### Usage ```tstwoslash import { createResolver, defineNuxtModule, extendPages, extendRouteRules } from '@nuxt/kit' export default defineNuxtModule({ setup (options) { const { resolve } = createResolver(import.meta.url) extendPages((pages) => { pages.unshift({ name: 'preview-new', path: '/preview-new', file: resolve('runtime/preview.vue'), }) }) extendRouteRules('/preview', { redirect: { to: '/preview-new', statusCode: 302, }, }) extendRouteRules('/preview-new', { cache: { maxAge: 60 * 60 * 24 * 7, }, }) }, }) ``` ### Type ```ts function extendRouteRules (route: string, rule: NitroRouteConfig, options?: ExtendRouteRulesOptions): void ``` ### Parameters **route**: A route pattern to match against.
**rule**: A route rule configuration to apply to the matched route. About route rules configurations, you can get more detail in [Hybrid Rendering > Route Rules](/docs/4.x/guide/concepts/rendering#route-rules). **options**: A object to pass to the route configuration. If `override` is set to `true`, it will override the existing route configuration.

Name	Type	Default	Description
`override`	`boolean`	`false`	Override route rule config, default is false

## `addRouteMiddleware` Registers route middlewares to be available for all routes or for specific routes. Route middlewares can be also defined in plugins via [`addRouteMiddleware`](/docs/4.x/api/utils/add-route-middleware) composable. Read more about route middlewares in the [Route middleware documentation](/docs/4.x/getting-started/routing#route-middleware). Watch Vue School video about adding route rules and route middelwares. ### Usage ```ts [module.ts]twoslash import { addRouteMiddleware, createResolver, defineNuxtModule } from '@nuxt/kit' export default defineNuxtModule({ setup () { const { resolve } = createResolver(import.meta.url) addRouteMiddleware({ name: 'auth', path: resolve('runtime/auth'), global: true, }, { prepend: true }) }, }) ``` ```ts [runtime/auth.ts]twoslash function isAuthenticated (): boolean { return false } // ---cut--- export default defineNuxtRouteMiddleware((to, from) => { // isAuthenticated() is an example method verifying if a user is authenticated if (to.path !== '/login' && isAuthenticated() === false) { return navigateTo('/login') } }) ``` ### Type ```ts function addRouteMiddleware (input: NuxtMiddleware | NuxtMiddleware[], options?: AddRouteMiddlewareOptions): void ``` ### Parameters **input**: A middleware object or an array of middleware objects with the following properties:

Property	Type	Required	Description
`name`	`string`	`true`	The name of the middleware.
`path`	`string`	`true`	The file path to the middleware.
`global`	`boolean`	`false`	If set to `true` , applies middleware to all routes.

**options**: An object with the following properties:

Property	Type	Default	Description
`override`	`boolean`	`false`	If `true` , replaces middleware with the same name.
`prepend`	`boolean`	`false`	If `true` , prepends middleware before existing middlewares.

--- - [Source](https://github.com/nuxt/nuxt/blob/main/packages/kit/src/pages.ts)