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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 every-
       day things with PDF documents.  Use it to:

       * Merge PDF Documents or Collate PDF Page Scans
       * Split PDF Pages into a New Document
       * Rotate PDF Documents or Pages
       * Decrypt Input as Necessary (Password Required)
       * Encrypt Output as Desired
       * Fill PDF Forms with X/FDF Data and/or Flatten Forms
       * Generate FDF Data Stencils from PDF Forms
       * Apply a Background Watermark or a Foreground Stamp
       * Report PDF Metrics such as Metadata and Bookmarks
       * Update PDF Metadata
       * Attach Files to PDF Pages or the PDF Document
       * Unpack PDF Attachments
       * Burst a PDF Document into Single Pages
       * Uncompress and Re-Compress Page Streams
       * Repair Corrupted PDF (Where Possible)


Simple combine documents

  • gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -sOutputFile=________.pdf <file list>

crop without rasterize

  • gs -o age_signal.pdf -sDEVICE=pdfwrite -g10000x12000 -c "<</PageOffset [-1000 -1000]>> setpagedevice" -f Kimmel_J.pdf
    • Page offset[ horizontal vertical ]
    • -g<width>x<height>


  • gs -o out.pdf -sDEVICE=pdfwrite -dDownsampleColorImages=true -dDownsampleGrayImages=true -dDownsampleMonoImages=true -dColorImageResolution=300 -dGrayImageResolution=300 -dMonoImageResolution=300 in.pdf