If you want to add entries to the context menu of Windows Explorer, here is the solution. You can use Quick PDF Tools available free, which has the facility to adjust the PDF metadata. The added entries allow its users to modify the PDF documents in a moment. Moreover, you can use them to edit certain PDF metadata entries in a window right on the Windows Desktop and it is simply possible to edit even the title, author, keywords and subject metadata entries.
In additional this is being used for adding or removing open passwords, edit the initial view merge selected pdf documents, convert selected images into pdf document format or to remove the bookmarks of the selected pdf documents. This tool is supposed to work with both Windows XP and Windows Vista operating systems. Another stunning news about this tool is, the size of the device is lesser than a megabyte and easy to download.