PDF Info

PDF Info is a high performance server tool from Traction Software for Windows PC, Unix Aix, Linux, Macintosh OSX, SUN Solaris, HP-UX

NOTE: This Software does NOT require Acrobat, PDF Info is designed for server usage. PDF Info software automates the process of exporting and importing pdf description information and XMP metadata.

PDF Info contains many special features like removing all XMP metadata and Info data, exporting Info data to XML and importing both XML or/and XMP metadata in to a single or a batch list of PDF files.

Simple command line parameters:
PdfInfo -itest.pdf -export=test.xml
(exports pdf info to test.xml file)
PdfInfo -itest.pdf -import=test.xml -otest-out.pdf -removexmp
(imports text.xml info data in to test-out.pdf)
PdfInfo -itest.pdf -exportxmp=test.xmp
(exports pdf xmp metadata to test.xmp file)
PdfInfo -itest.pdf -importxmp=test.xmp -otest-out.pdf -removeinfo
(imports text.xmp metadata in to test-out.pdf) see full list of features for full list of parameters.

System Requirements:
Windows, AIX, Linux, Mac, Solaris

More Research:
xmp xml pdf info metadata