If PDF is electronic paper, then pdftk is an electronic staple-remover, hole-punch, binder, secret-decoder-ring, and X-Ray-glasses. Pdftk is a simple tool for doing everyday things with PDF documents.
用于PDF的批处理，包括批量合并PDF，解密PDF，页面旋转等功能。具体请看其文档资料，英文工具。
