Created
July 13, 2023 12:13
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PDF to JPG converter via Ghostscript
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| #!/bin/bash | |
| if command -v gs >/dev/null 2>&1 ; then | |
| echo "gs found" | |
| else | |
| echo "GPL Ghostscript not found" | |
| fi | |
| out_pages=$(echo $1 | sed -e "s/\.pdf$/-p%02d\.jpg/g") | |
| out_files=$(echo $1 | sed -e "s/\.pdf$/-p*\.jpg/g") | |
| out_final=$(echo $1 | sed -e "s/\.pdf$/\.jpg/g") | |
| # total_pages=$(gs -q -c "(${1}) (r) file runpdfbegin pdfpagecount = quit" -f $1) | |
| echo "Parameters" | |
| echo 'In($1) = ' $1 | |
| echo 'Out($out_pages) = ' $out_pages | |
| echo 'Out($out_final) = ' $out_final | |
| # echo 'TotalPages = ' $total_pages | |
| echo "Parameters - Consts" | |
| DPI=150 | |
| ALPHABITS=2 | |
| QUALITY=80 | |
| FIRSTPAGE=1 | |
| LASTPAGE=99 | |
| # MEMORY in MB | |
| MEMORY=10 | |
| # echo 'DPI: ' $DPI | |
| # echo 'ALPHABITS: ' $ALPHABITS | |
| # echo 'QUALITY: ' $QUALITY | |
| # echo 'FIRSTPAGE: ' $FIRSTPAGE | |
| # echo 'LASTPAGE: ' $LASTPAGE | |
| # echo 'MEMORY: ' $MEMORY | |
| gs \ | |
| -sDEVICE=jpeg \ | |
| -sOutputFile=$out_pages \ | |
| -r${DPI} \ | |
| -dNOPAUSE \ | |
| -dFirstPage=${FIRSTPAGE} \ | |
| -dLastPage=${LASTPAGE} \ | |
| -dJPEGQ=${QUALITY} \ | |
| -dGraphicsAlphaBits=${ALPHABITS} \ | |
| -dTextAlphaBits=${ALPHABITS} \ | |
| -dNumRenderingThreads=4 \ | |
| -dBufferSpace=${MEMORY}000000 \ | |
| -dBandBufferSpace=${MEMORY}000000 \ | |
| -c ${MEMORY}000000 setvmthreshold \ | |
| -f $1 \ | |
| -c quit | |
| montage \ | |
| -border 0 \ | |
| -tile 1x0 \ | |
| -quality 100 -geometry 595x842+11+22 \ | |
| $out_files \ | |
| $out_final | |
| rm -f ${out_files} |
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Example:
./converter-pdf2jpg.sh ./test.pdf