Merge pdf using pdftk
pdftk is a command line handy tool for manipulating PDF
usage example
pdftk 1.pdf 2.pdf 3.pdf 4.pdf 5.pdf 6.pdf 7.pdf cat output final.pdfRemove pdf pages using pdftk
example discarding page 13 from in.pdf and producing out.pdf
pdftk in.pdf cat 1-12 14-end output out.pdfResize and scale using Ghostscript
gs or Ghostscript is a PostScript and PDF language interpreter and pre‐viewer
Usage example
gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dQUIET -dBATCH -sOutputFile=output.pdf input.pdf
# resolution info
# -dPDFSETTINGS=/screen (screen-view-only quality, 72 dpi images)
# -dPDFSETTINGS=/ebook (low quality, 150 dpi images)
# -dPDFSETTINGS=/printer (high quality, 300 dpi images)
# -dPDFSETTINGS=/prepress (high quality, color preserving, 300 dpi imgs)
# -dPDFSETTINGS=/default (almost identical to /screen)Change metadata
# install
sudo apt install libimage-exiftool-perl
# execute
exiftool -Title="my title" -Author="644.ovh" -Subject="my subject" <file_name.pdf>
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