Convert MS office doc[x], xls[x], ppt[x] and Openoffice Files to JPEG image using GhostScript and Headless Libreoffice

doc2jpeg

#!/usr/bin/env bash
read -p 'Document filename (with path): ' DOC_NAME_AND_PATH
read -p 'Image Destination Path (directory): ' DOC_DESTINATION

#Variables
DOC_NAME_AND_EXT=$(basename $DOC_NAME_AND_PATH)
DOC_EXT=${DOC_NAME_AND_EXT##*.}
DOC_NAME=${DOC_NAME_AND_EXT%.*}
PDF_FILENAME="$DOC_NAME.pdf"
PDF_FILENAME_AND_PATH="$DOC_DESTINATION/$DOC_NAME"

#check if destination directory
if [ ! -d "$DOC_DESTINATION" ]; then
  mkdir -p $PDF_FILENAME_AND_PATH;
fi

#convert to pdf
echo "Converting document from $DOC_EXT to PDF..."
PDF_GEN_START=$(date +%s)
libreoffice --invisible --headless --convert-to pdf:writer_pdf_Export $DOC_NAME_AND_PATH --outdir "$PDF_FILENAME_AND_PATH/" >/dev/null 2>&1
PDF_GEN_END=$(date +%s)

PDF_CONV_TIME=$(( $PDF_GEN_END - $PDF_GEN_START ))
echo "Document converted to PDF successfully in $PDF_CONV_TIME second(s)"

PDF_PAGE_NUMBER=`gs -q -dNODISPLAY -c "($PDF_FILENAME_AND_PATH/$PDF_FILENAME) (r) file runpdfbegin pdfpagecount = quit"`

read -p 'Start page number(default = 1): ' PDF_OFFSET
read -p "Last page number (default = $PDF_PAGE_NUMBER): " PDF_LIMIT

if [ -z "$PDF_OFFSET" ] || [ "$PDF_OFFSET" -eq 0 ]; then
    PDF_OFFSET=1
fi

if [ -z "$PDF_LIMIT" ] || [ "$PDF_LIMIT" -eq 0 ] || [ "$PDF_OFFSET" -gt "$PDF_LIMIT" ]; then
    PDF_LIMIT=$PDF_PAGE_NUMBER
fi

#gs -dNumRenderingThreads=4 -dNOPAUSE -sDEVICE=pngalpha -dFirstPage=1 -dLastPage=44-sOutputFile=../test/image%d.png -r300 -q ../TraceProvisioningDeploymentLogManagementandLoadTesting.pdf -c quit
IMG_GEN_START=$(date +%s)
gs -q -sDEVICE=jpeg -dBATCH -dNOPAUSE -dFirstPage=$PDF_OFFSET -dLastPage=$PDF_LIMIT -dUseCropBox -r150x150 -sOutputFile="$PDF_FILENAME_AND_PATH/$DOC_NAME-%03d.jpeg" "$PDF_FILENAME_AND_PATH/$PDF_FILENAME" >/dev/null 2>&1
IMG_GEN_END=$(date +%s)

DIFF=$(( $IMG_GEN_END - $IMG_GEN_START ))
echo "Converted PDF to Image successfully in $DIFF second(s)"