31 lines
1.1 KiB
Markdown
31 lines
1.1 KiB
Markdown
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---
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tags:
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- note
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created_at: "2023-02-17"
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source: "KemoNine Blog"
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---
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If you have access to `imagemagick` you can quickly convert a PDF coloring page(s) to grayscale PNG using the below procedure and notes.
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## Notes {#notes}
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- The `pdfimages` command below will get you a dpi listing for each page in the PDF that has an image, use that value instead of `300` in the below, **if** it is present.
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- The `-type Grayscale` parameter can be removed if you need color output.
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- If the below fails Adobe has an online converter at: https://www.adobe.com/acrobat/online/convert-pdf.html
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## Conversion {#conversion}
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1. Install `imagemagick`
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2. `pdfimages -list shipspage1.pdf`
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3. ``for file in `ls *.pdf`; do convert -density 300 -type Grayscale ${file} ${file}.png; done``
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## Resources {#resources}
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- <https://stackoverflow.com/questions/50006770/how-to-get-dpi-of-a-pdf-file>
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- <https://jdhao.github.io/2019/11/20/convert_pdf_to_image_imagemagick/>
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- <https://stackoverflow.com/questions/2869908/convert-pdf-to-png-using-imagemagick>
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- <https://legacy.imagemagick.org/discourse-server/viewtopic.php?t=11279>
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