> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/ios/viewer/apis.md).

# APIs for iOS PDF Viewer

Discover utility classes like PTPDFViewCtrl and PTDocumentController for interactive PDF viewing and editing. Explore PTTabbedDocumentViewController for a seamless tabbed interface experience. The Apr

The following are utility classes that can be used for the viewer.

[PTPDFViewCtrl](https://sdk.apryse.com/api/ios/Classes/PTPDFViewCtrl.html) PTPDFViewCtrl is a UIView and encapsulates a rich set of functionalities for interactive viewing of PDF documents.

[PTDocumentController](https://sdk.apryse.com/api/ios/Classes/PTDocumentController.html) PTDocumentController is part of the tools library and is an all-in-one document reader and PDF editor.

[PTTabbedDocumentViewController](https://sdk.apryse.com/api/ios/Classes/PTTabbedDocumentViewController.html) PTTabbedDocumentViewController hosts multiple PTDocumentControllers with a tabbed interface.


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