ImageMagick convert pdf with multiple pages to high quality PNG

user_999270 0
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I am trying to convert a multi-page PDF to one long png with the following command:

convert -append -flatten -density 300 in.pdf out.png

I am using -flatten to lose transparency, since I want a white background in the final PNG. The problem is that it takes only the first page instead of using all the pages.

How can I convert the PDF to one long PNG while losing the transparency and using a white background?

imagemagick pdf
2 Answers

This command works for me on IM 6.9.9.22 Q16 Mac OSX with Ghostscript 9.21

convert -density 300 -colorspace sRGB itc101_13.pdf -alpha off -append out.png

enter image description here

If it does not work for you, then what is your ImageMagick version and what is your Ghostscript version.

user_73557410

You have your syntax wrong. You must read the PDF before applying append. Try

convert -density 300 -colorspace sRGB in.pdf +adjoin -append -background white -flatten out.png

If that does not work, then what is your ImageMagick version and platform? What is your Ghostscript version and your libpng version? Can post a link to your PDF file?

Note that +adjoin is not usually necessary for output to PNG, but won't hurt.

user_73557410
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