We are exploring your product and could not find if the VeryPDF product has any option to set the print option to be duplex. We need the print to come on both side and this is our main requirement. We downloaded the trial version and checking it. Is it available on the trial version?
PDFPrint Command Line has a "-duplex" option, you can use this option to set "duplex" to target printer,
-duplex <int> : select duplex or double-sided printing for printers capable of duplex printing,
1 : simplex
2 : horizontal
3 : vertical
pdfprint.exe -duplex 1 C:\input.pdf
pdfprint.exe -duplex 2 C:\input.pdf
pdfprint.exe -duplex 3 C:\input.pdf
If the "-duplex" option is not work fine to you, you may also try the "-savedevmode" and "-loaddevmode" options, you can use these options to adjust margins, duplex, paper size, staple, fold, tray (paper source), etc. settings to target printer easily, please use the following steps to try these options,
1. Please run following command line to prompt the user Printer Dialog and save the printer settings to a disk file,
pdfprint.exe -savedevmode D:\printer.dat -printer "Your Printer Name"
2. In the Printer Dialog, you can set following options, such as,
set "Duplex" option to "Top-Top" or others;
set default paper tray to "Tray 3" or others;
set the paper size to "11x17" or others;
set other options that you want;
set staple to "on" or others,
set fold or staple option,
set double sided printing option,
set tray (paper source) option,
click "OK" to close Printer Dialog, you will get a D:\printer.dat file,
3. Please run following command line to load the devmode from disk file and set it to printer,
pdfprint.exe -loaddevmode D:\printer.dat -printer "Your Printer Name" D:\input.pdf
4. OK, you will able to print your PDF file with correct options.
We hope above solutions will helpful to you, please give them a try.