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- #!/bin/bash
- #
- # Convert PDF to hybrid HTML output with images and line art rendered to a
- # background image, and text overlaid on top as absolutely positioned HTML
- # text.
- input=$1
- out=${2:-out}
- fmt=${3:-png}
- dpi=${4:-96}
- scale=$(expr 72 '*' $dpi / 96)
- if test -f "$1"
- then
- echo Processing "$input" out=$out fmt=$fmt dpi=$dpi
- else
- echo "usage: pdftohtml.sh input.pdf output-stem image-format dpi"
- echo " example: pdftohtml.sh input.pdf output png 96"
- exit
- fi
- title=$(basename "$input" | sed 's/.pdf$//')
- mutool convert -Oresolution=$dpi -o $out.html "$input"
- sed -i -e "/<head>/a<title>$title</title>" $out.html
- sed -i -e "/^<div/s/page\([0-9]*\)\" style=\"/page\1\" style=\"background-image:url('$out\1.$fmt');/" $out.html
- mutool draw -K -r$dpi -o$out%d.png "$input"
- echo Converting to $fmt
- for png in $out*.png
- do
- xxx=$(basename $png .png).$fmt
- case $fmt in
- png)
- if command -v optipng >/dev/null
- then
- optipng -silent -strip all $png
- fi
- ;;
- jpg)
- if command -v mozjpeg >/dev/null
- then
- mozjpeg -outfile $xxx $png
- else
- convert -format $fmt $png $xxx
- fi
- ;;
- webp)
- if command -v cwebp >/dev/null
- then
- cwebp -quiet -o $xxx $png
- else
- convert -format $fmt $png $xxx
- fi
- ;;
- *)
- convert -format $fmt $png $xxx
- ;;
- esac
- done
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