<!--
{
  "availability" : [
    "iOS: 2.0.0 -",
    "iPadOS: 2.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.3.0 -",
    "tvOS: -",
    "visionOS: 1.0.0 -",
    "watchOS: 2.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "CoreGraphics",
  "identifier" : "/documentation/CoreGraphics/CGPDFDocument/catalog",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "Core Graphics",
      "CoreGraphics"
    ],
    "preciseIdentifier" : "c:@F@CGPDFDocumentGetCatalog"
  },
  "title" : "catalog"
}
-->

# catalog

Returns the document catalog of a Core Graphics PDF document.

```
var catalog: CGPDFDictionaryRef? { get }
```

## Discussion

The entries in a PDF document catalog recursively describe the contents of the PDF document. You can access the contents of a PDF document catalog by calling the function [`catalog`](/documentation/CoreGraphics/CGPDFDocument/catalog). For information on accessing PDF metadata, see [Quartz 2D Programming Guide](https://developer.apple.com/library/archive/documentation/GraphicsImaging/Conceptual/drawingwithquartz2d/Introduction/Introduction.html#//apple_ref/doc/uid/TP30001066).

---

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