Why it is not possible to access the Word document contents page by page in WinRT FileFormat libraries ?

The Word document is a flow document in which contents will not be preserved page by page; instead, the contents will be preserved sequentially, section by section. Each section may extend to various pages based on its contents, such as tables, text, images, etc. A Word viewer/editor renders the contents of the Word document page by page dynamically when opened for viewing or editing, and this page-wise rendered information will not be preserved at the document level as per the Word file format specification. Whereas Essential® DocIO is a non-UI component that provides a full-fledged document object model to manipulate the Word document contents.

Hence, it is not directly possible to access the Word document contents page by page; the same holds true in Essential® DocIO. As a workaround, you can split the contents of each page as a separate section in the Word document and access the contents by sections instead of pages.