I am trying to crop the bottom inch of a PDF with Ghostscript and C#.

When I run my code, it successfully creates the new PDF, but it is completely blank. My understanding of `gsArgsList.Add(" -c \"[/CropBox [0 72 0 0] /PAGES pdfmark\"");` is that is will crop 72pt (1 inch) off of the bottom of the page. I've included some code in hopes someone will see something obvious. 

I have played with the 4 number parameters of CropBox but no matter what I pass, it always results in a blank PDF. I only want to remove the footer.

**UPDATE - My code now shows the working solution.** 

```
/// <summary>
/// Crop the bottom inch from the temporary PDF file using GhostScript.
/// A new PDF file (test_cropped.pdf) will be created with the modifications.
/// </summary>
/// <param name="tempPDF">the path to the temporary PDF</param>
/// <param name="croppedPDF">the path to the modified PDF</param>
public static void cropPDFFooter(string inputPDF, string outputPDF, string pdfPostScript)
{
     try
        {
            string gsPath = @"C:\gs\gs9.14\bin\gswin64c.exe";

            List<string> gsArgsList = new List<string>();
            gsArgsList.Add(" -o " + outputFile);
            gsArgsList.Add(" -sDEVICE=pdfwrite");
            gsArgsList.Add(" -o " + outputFile + " -c \"mark /.HWMargins [ 0.0 288.0 0.0 0.0 ] .dicttomark setpagedevice\" -f " + inputFile + "");

            var gsArgs = String.Join(null, gsArgsList);

            System.Diagnostics.Process.Start(gsPath, gsArgs);

        }
    catch (Exception ex)
    {
        Console.WriteLine(ex.ToString());
        Console.ReadLine();
    }
}

```