Magically watermark your PDF's in bulk

README.md

Requirements

_Assumes you are on OSX (sorry, I didn't have time to test it on linux)

• PDFKit for Mac 10.11
• brew install imagemagick
• brew install gs

Usage

./watermark.sh mydoc.pdf < recipients.txt

watermark.sh

#!/bin/bash

mkdir out

filename=$(basename "$1")
extension="${filename##*.}"
filename="${filename%.*}"

while read line
do
  echo "Watermarking $line"
  convert -background transparent \
    -fill rgba\(0,0,0,0.12\) -rotate 45 \
    -pointsize 96 label:"$line - Confidential" \
    -trim +repage watermark.pdf

  output="$filename-${line//[[:blank:]]/}"
  echo "Saving to $output.pdf"
  pdftk $1 multistamp watermark.pdf output out/$output.pdf
done

rm watermark.pdf