description: "In Nuxt 3, your routing is defined by the structure of your files inside the pages directory. However, since it uses vue-router under the hood, Nuxt offers you several ways to add custom routes in your project."
---
## Adding custom routes
In Nuxt 3, your routing is defined by the structure of your files inside the [pages directory](/docs/guide/directory-structure/pages). However, since it uses [vue-router](https://router.vuejs.org/) under the hood, Nuxt offers you several ways to add custom routes in your project.
Using [router options](/docs/guide/going-further/custom-routing#router-options), you can optionally override or extend your routes using a function that accepts the scanned routes and returns customized routes.
Nuxt will not augment any new routes you return from the `routes` function with metadata defined in `definePageMeta` of the component you provide. If you want that to happen, you should use the `pages:extend` hook which is [called at build-time](/docs/api/advanced/hooks#nuxt-hooks-build-time).
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### Using the `pages:extend` hook
You can add, change or remove pages from the scanned routes with the `pages:extend` nuxt hook. For example, to prevent creating routes for any `.ts` files:
You can enable hash history in SPA mode. In this mode, router uses a hash character (#) before the actual URL that is internally passed. When enabled, the **URL is never sent to the server** and **SSR is not supported**.
```ts [nuxt.config.ts]
export default defineNuxtConfig({
ssr: false,
router: {
options: {
hashMode: true
}
}
})
```
#### Custom History (advanced)
You can optionally override history mode using a function that accepts the base URL and returns the history mode. If it returns `null` or `undefined`, Nuxt will fallback to the default history.