---
url: /api/symbols/workbox-swkit/navigation-preload/enable.md
---

# enable

Function @vite-pwa/workbox-swkit/navigation-preload

```ts
enable(headerValue?: string): void
```

If the browser supports Navigation Preload, then this will enable it.

### Parameters

* `headerValue` – Optionally, allows developers to
  [override](https://developers.google.com/web/updates/2017/02/navigation-preload#changing_the_header)
  the value of the `Service-Worker-Navigation-Preload` header which will be
  sent to the server when making the navigation request.