XPS documents are created and accessed via a collection of interfaces of various classes of an application programming interface. The application programming interface includes a document sequence class for reading and writing the document sequence of the XPS document, a fixed document class for reading and writing the fixed documents of the document sequence, a page class for reading and writing the pages of the fixed documents, and a resource class for accessing the resources of each page. Applications seeking to create or read XPS documents may utilize the application programming interface such that the complexities of creating and accessing the XPS document are abstracted away.