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# init(_:)

Creates a Core Graphics PDF document using data specified by a URL.

```
init?(_ url: CFURL)
```

## Parameters

`url`

The URL address at which the PDF document data is located.

## Return Value

A new Core Graphics PDF document, or `NULL` if a document could not be created. In Objective-C, you’re responsible for releasing the object using [`CGPDFDocumentRelease`](/documentation/CoreGraphics/CGPDFDocumentRelease).

## Discussion

Distributing individual pages of a PDF document to separate threads is not supported. If you want to use threads, consider creating a separate document for each thread and operating on a block of pages per thread.

## See Also

[`CGContextDrawPDFDocument`](/documentation/CoreGraphics/CGContextDrawPDFDocument)


---

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