Convert pdf file to jpeg – with imagemagic

Short article just to write down not-so frequently (for me) task:

  • for MacOS, install imagemagic: brew install imagemagick, when using other OS just install imagemagic with your package manager
  • Create directory and copy/move file you want to convert
  • change directory to the new one
  • Run command (macOS): 
/opt/homebrew/bin/magick convert -density 300 fileToConvert.pdf -quality 100 'fileToConvert_%03d.jpg'

remove /opt/homebrew/bin from that command where using on other system than macOs

Options:

  • density — resolution (300 dpi for high-quality images)
  • quality 100 — set the jpeg quality, where 100 means 100% (no size reduction)
  • fileToConvert_%03d.jpg — output file will be numbered, starting at 001

other possible parameters (output file will be more optimised):

/opt/homebrew/bin/magick convert -density 100 file.pdf \
-resize 1024x1024 \
-quality 85 \
-sampling-factor 4:2:0 \
-strip \
-interlace JPEG \
'1 fileToConvert_%03d.jpg'

cheers

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