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# fileURL

The file URL you use to initialize the document.

```
var fileURL: URL { get }
```

## Discussion

The URL identifies the location of the document in the application sandbox. It includes the file extension, from which the file type is determined.

UIKit sets this property before it calls the completion handlers of the [`open(completionHandler:)`](/documentation/UIKit/UIDocument/open(completionHandler:)), [`save(to:for:completionHandler:)`](/documentation/UIKit/UIDocument/save(to:for:completionHandler:)), and [`revert(toContentsOf:completionHandler:)`](/documentation/UIKit/UIDocument/revert(toContentsOf:completionHandler:)). If, outside of these methods or their completion handlers, you want to wait for any pending file operations to complete before you access this property, you can call [`performAsynchronousFileAccess(_:)`](/documentation/UIKit/UIDocument/performAsynchronousFileAccess(_:)) and access the property value in the block parameter.

## See Also

[`-  initWithFileURL:`](/documentation/UIKit/UIDocument/init(fileURL:))

Returns a document object initialized with its file-system location.


---

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