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49 lines
1.1 KiB
Markdown
49 lines
1.1 KiB
Markdown
# Compare two PDF files
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Install and use [`diffpdf`][diffpdf] (preferred) or [`diff-pdf`][diff-pdf]:
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```sh
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sudo pacman -S diffpdf
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sudo zypper install diff-pdf
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```
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```sh
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diffpdf file1 file2
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```
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As an alternative:
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```sh
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# create a pdf with the diff as red pixels
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magick compare -verbose -debug coder $PDF_1 $PDF_2 -compose src /tmp/$OUT_FILE.tmp
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# merge the diff-pdf with background PDF_1
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pdftk /tmp/$OUT_FILE.tmp background $PDF_1 output $OUT_FILE
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```
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## Further readings
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- [`diffpdf`][diffpdf]
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- [`diff-pdf`][diff-pdf]
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- [ImageMagick]
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- [`pdftk`][pdftk]
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## Sources
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- [Compare PDF Files With DiffPDF]
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- [PDF compare on linux command line]
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<!--
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References
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-->
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<!-- Knowledge base -->
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[diffpdf]: diffpdf.md
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[diff-pdf]: diff-pdf.md
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[imagemagick]: imagemagick.md
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[pdftk]: pdftk.md
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<!-- Others -->
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[compare pdf files with diffpdf]: https://www.linuxandubuntu.com/home/compare-pdf-files-with-diffpdf-in-ubuntu-linux-debian-fedora-other-derivatives
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[pdf compare on linux command line]: https://stackoverflow.com/questions/6469157/pdf-compare-on-linux-command-line#7228061
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