A common scenario when use a CLI pdf tool is : merge few pdf files, then resize all page of output pdf to produce a proper document (because the pages from different pdf file can be different).
According this http://www.44342.com/pdf-f807-t4985-p1.htm, it isn't possible to resize the page and its content in command line level. Many other pdf tool like "cpdf" provide this feature. That fact that pdfbox miss such feature make it no fit for CLI usage. CLI interface pdfbox should cover common scenario usage of a pdf tool. It is possible to add this feature?
