GhostScript auto pagenumbering

Question

I want to export one certain page from a pdf document to an image and automatically fill the page number in the file name. When I run the following code:

gs \                                             
-sDEVICE=jpeg \
-o outfile-%03.jpeg \
-dFirstPage=12 \
-dLastPage=12 \
wo.pdf

I get: outfile-001.jpeg instead of outfile-012.jpeg.

Ghostscript always numbers its output files from 1 – KenS Nov 08 '19 at 16:31 — KenS, Nov 08 '19 at 16:31

score 0 · Accepted Answer · answered Nov 11 '19 at 09:04

I've wrote a bash script for the job:

function extract_nth_page(){
    printf -v j "outfile-%05g.png" $1
    echo $j
    gs -q -dNOPAUSE -sDEVICE=png16m -r600 -dFirstPage=$1 -dLastPage=$1 -sOutputFile=$j $2 -c quit
    return 0
}

# Extracts page number 42 from myFile.pdf to outfile-00042.png
extract_nth_page 42 myFile.pdf

GhostScript auto pagenumbering

1 Answers1