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@andyrbell

andyrbell/scanner.sh

Last active March 28, 2025 17:57
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Make a pdf look scanned using ImageMagick
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scanner.sh
# use ImageMagick convert
# the order is important. the density argument applies to input.pdf and resize and rotate to output.pdf
convert -density 90 input.pdf -rotate 0.5 -attenuate 0.2 +noise Multiplicative -colorspace Gray output.pdf
@fewaltix
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fewaltix commented Mar 16, 2022 •
edited
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Thank you!
I used zenity to add graphical input and output prompts:
convert -density 150 "$(zenity --file-selection --title="Select Input File" --file-filter=*[PpDdFf])" -rotate "$([ $((RANDOM % 2)) -eq 1 ] && echo -)0.$(($RANDOM % 4 + 5))" -attenuate 0.4 +noise Multiplicative -attenuate 0.03 +noise Multiplicative -sharpen 0x1.0 -colorspace Gray "$(zenity --file-selection --save --title="Select Output File" --filename ".pdf")"

Can also be found here as a .desktop file, so the script can be started from the starter on Linux machines:
https://gist.github.com/fewaltix/c1437171d16671741aafe146751dbf9f

@leeeeeeeee2
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work

@mrnhrd
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mrnhrd commented Feb 14, 2025

On my ubuntu 20.04 machine this also added the PDF Metadata Tag producer=ImageMagick in the output. You might want to edit that out: https://askubuntu.com/questions/27381/how-to-edit-pdf-metadata-from-command-line

exiftool -Producer="" output.pdf

Using a realistic scanner name instead of the blank string is an exercise left for the reader 😛

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