---
title: webkitIsFullScreen
framework: WebKit JS
role: symbol
role_heading: Instance Property
platforms: [Safari Desktop 5.1+, Safari Mobile 9.0+]
path: webkitjs/document/1631511-webkitisfullscreen
---

# webkitIsFullScreen

A Boolean that indicates whether the document is in full-screen mode.

## Declaration

```data
readonly attribute boolean webkitIsFullScreen;
```

## Discussion

`true` if the document is in full-screen mode; otherwise, `false`.

## See Also

### Displaying Content Fullscreen

- [webkitCancelFullScreen](1629556-webkitcancelfullscreen.md)
- [webkitCurrentFullScreenElement](1629974-webkitcurrentfullscreenelement.md)
- [webkitFullScreenKeyboardInputAllowed](1629394-webkitfullscreenkeyboardinputall.md)
- [onwebkitfullscreenchange](1631998-onwebkitfullscreenchange.md)