A method and apparatus of assembling a set of page files into a document file is described. A set of page files, which represents one page or a group of pages within a document, is received as input files. For one embodiment of the present invention, the page files and document files are written in a page description language. The correct sequence of the pages within the document is determined. Then, a framework for a document file is created. The framework is created to include all or a portion of the pages from the set of page files. One or more of the pages within the page files are modified to fit into the framework and then stored within the document framework. The document file is then stored.