---
name: "[up-boot=manual]"
area: "API"
kind: "HTML attribute"
parent: "up.framework module"
visibility: "experimental"
url: "https://unpoly.com/api/up-boot-manual"
---
<nav aria-label="Unpoly docs">[All docs](https://unpoly.com/index.md) · [up.framework module](https://unpoly.com/api/up.framework.md)</nav>

# [up-boot=manual]

**This feature is experimental**. Please [share](https://github.com/unpoly/unpoly/discussions) your experiences so we know what to keep or change.

Prevent Unpoly from booting automatically.

By default Unpoly [automatically boots](https://unpoly.com/learn/install.md#initialization) on [`DOMContentLoaded`](https://developer.mozilla.org/en-US/docs/Web/API/Window/DOMContentLoaded_event). To prevent this, add an `[up-boot="manual"]` attribute to the `<html>` element:

```html
<html up-boot="manual">
  ...
</html>
```

You may then call [`up.boot()`](https://unpoly.com/api/up.boot.md) to manually boot Unpoly at a later time.

<nav aria-label="Guides">

- [Learn: Installation](https://unpoly.com/learn/install.md)

</nav>