I wrote a little powershell script to go through a directory structure and convert all pdf files to tiff files using ghostscript. Here is my script:
$tool = 'C:\Program Files\gs\gs8.63\bin\gswin32c.exe'
$pdfs = get-childitem . -recurse | where {$_.Extension -match "pdf"}
foreach($pdf in $pdfs)
{
$tiff = $pdf.FullName.split('.')[0] + '.tiff'
if(test-path $tiff)
{
"tiff file already exists " + $tiff
}
else
{
'Processing ' + $pdf.Name
$param = "-sOutputFile=$tiff"
& $tool -q -dNOPAUSE -sDEVICE=tiffg4 $param -r300 $pdf.FullName -c quit
}
}