A dynamic imposition system provides for the printing of variable length documents onto a predefined number of pages. The more important pages in the document can be printed at their default size and resolution while less important pages can be automatically scaled down and printed at half size or less. The system automatically assigns ranks to the page descriptions in a print job based on each page's importance and then assigns one or more allowable impositions to each page description. The system then selects the imposition specifications that permit the imposition of the document onto a predetermined number of sheets. The document can then be imposed and printed in accordance with the selected imposition specifications.