The `pages/` directory is optional, meaning that if you only use [app.vue](/docs/directory-structure/app), vue-router won't be included, reducing your application bundle size.
# Pages directory
Nuxt will automatically integrate [Vue Router](https://next.router.vuejs.org/) and map `pages/` directory into the routes of your application.
## Dynamic Routes
If you place anything within square brackets, it will be turned into a [dynamic route](https://next.router.vuejs.org/guide/essentials/dynamic-matching.html) parameter. You can mix and match multiple parameters and even non-dynamic text within a file name or directory.
If you need a catch-all route, you create it by using a file named like `[...slug].vue`. This will match _all_ routes under that path, and thus it doesn't support any non-dynamic text.
