Create flatten PDF file

flat-pdf.sh

#!/bin/bash                                                                                                                                                                    
                                                                                                                                                                               
# Script to convert PDF - create flatten PDF file                                                                                                                              
#                                                                                                                                                                              
# Format:                                                                                                                                                                      
#  ./convert input-file.pdf output-file.pdf                                                                                                                                    
#                                                                                                                                                                              
# Dependencies:                                                                                                                                                                
# * pdftk                                                                                                                                                                      
# * imagemagick                                                                                                                                                                
                                                                                                                                                                               
PDF=$1                                                                                                                                                                         
OUT_PDF=$2                                                                                                                                                                     
DENSITY=300                                                                                                                                                                    
                                                                                                                                                                               
echo "Processing $PDF"                                                                                                                                                         
DIR=`basename "$1" .pdf`                                                                                                                                                       
                                                                                                                                                                               
echo ' Converting pages to JPEG files...'                                                                                                                                      
pdftocairo -r $DENSITY -jpeg $PDF /tmp/convert-"$DIR"                                                                                                                          
                                                                                                                                                                               
echo ' Merge JPEG files into one PDF'                                                                                                                                          
convert -density $DENSITY /tmp/convert-"$DIR"* $OUT_PDF                                                                                                                        
                                                                                                                                                                               
rm /tmp/convert-"$DIR"*                                                                                                                                                        
                                                                                                                                                                               
echo 'All done'