PDF files are not editable ones - that is their main shortcoming. If you need to have a vector version of PDF documents for further edits or design works, you can convert them to WMF format. To have this feature on a server side, you should use Total PDF ConverterX. It allows converting PDF via command line by many users at once. The pack of features is the same as provided by desktop Total PDF Converter, but instead of the user interface you will work with the app via command line.
Compared with the desktop converter, this solution has a range of advantages:
Having no user interface, this script can work via any custom graphic shell. You can port the converter into it using ActiveX. By default convert PDF to WMF, command line parameters are used to set conversion mode. For WMF you can adjust the look and feel of the future document. For instance, you can set file name template and set conversion of each page to separate PNG file. If you are not sure what settings to apply, you can convert PDF to WMF on a server with the default settings. In this case only sources address and destination for future WMF copies should be specified, together with the target format.
Be sure that all the content of PDF originals will be correctly exported to WMF. Total PDF ConverterX is sensitive enough to recognize all data correctly. High quality server based PDF conversion is the main advantage of this tool. It is a very flexible script that can work as a separate program or be integrated into another app. Download this server PDF converter and adjust it for your specific needs.