By default, if you don't give an extra parameter, Ghostscript will output images with a 72dpi resolution.And in much better quality.Ībout IM's handling of PDF conversion to images via the Ghostscript delegate you should know two things first and foremost: Works, but isn't the most efficient way if you know that Ghostscript can do PDF => PNG in one go. So how does IM get (E)PS from your PDF? Easy: convert -list delegate | findstr /i PDFĪh! It uses Ghostscript to make a PDF => PS conversion, then uses Ghostscript again to make a PS => PNG conversion. You'll discover that IM does produce PNG only from PS or EPS input. If you are on Windows, try this: convert -list delegate | findstr /i png (On my system that's a list of 32 different commands.) Now to see which commands are used to convert to PNG, use this: convert -list delegate | grep -i png

You can learn about the detailed settings ImageMagick's 'delegates' (the external programs ImageMagick uses, such as Ghostscript) by typing convert -list delegate it then uses Ghostscript for PostScript => PNG conversion.it first uses Ghostscript for PDF => PostScript conversion.It does not convert PDF => PNG in one go, but uses 2 different steps: BTW, one of the reasons ImageMagick is so much slower is that it calls Ghostscript twice.

Imagemagick convert pdf to png