pdftk: pdftk (pdf toolkit) pdftk: pdftk: If PDF is electronic paper, then pdftk is an electronic pdftk: staple-remover, hole-punch, binder, secret-decoder-ring, and pdftk: X-Ray-glasses. Pdftk is a command-line tool for doing everyday things pdftk: with PDF documents. Keep one in the top drawer of your desktop and use pdftk: it to: Merge PDF documents, split PDF documents, apply watermark, pdftk: repair corrupt PDF, update PDF metadata and much more. pdftk does not pdftk: require Acrobat and is free software (GPL). pdftk: pdftk: