PDFtk Server

Command-line tool to merge, split, and rotate PDFs; fill forms with FDF/XFDF data and flatten them (or generate an FDF stencil from a form's fields); encrypt and decrypt with passwords; add watermarks and stamps; manage bookmarks, metadata, and attachments; repair damaged PDFs; and recompress page streams. The Java-rewritten 'Server' edition of the classic PDFtk command-line tool, maintaining the same CLI interface and command syntax as the original.