<!--
{
  "availability" : [
    "iOS: 5.0.0 -",
    "iPadOS: 5.0.0 -",
    "macCatalyst: 13.1.0 -",
    "tvOS: -",
    "visionOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "UIKit",
  "identifier" : "/documentation/UIKit/UIPageViewController/isDoubleSided",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "UIKit"
    ],
    "preciseIdentifier" : "c:objc(cs)UIPageViewController(py)doubleSided"
  },
  "title" : "isDoubleSided"
}
-->

# isDoubleSided

A Boolean value that indicates whether content appears on the back of pages.

```
var isDoubleSided: Bool { get set }
```

## Discussion

The default value for this property is <doc://com.apple.documentation/documentation/Swift/false>.

If the back of pages has no content (the value is <doc://com.apple.documentation/documentation/Swift/false>), then the content on the front of the page will partially show through to the back when turning pages.

If the spine is located in the middle, the value must be <doc://com.apple.documentation/documentation/Swift/true>. Setting it to <doc://com.apple.documentation/documentation/Swift/false> with the spine located in the middle raises an exception.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)