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oam/knowledge base/compare two pdf files.md
Michele Cereda fe0adabb88 chore: aligned docs to the template file for articles
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Compare two PDF files

Install and use diffpdf (preferred) or diff-pdf:

sudo pacman -S diffpdf
sudo zypper install diff-pdf

diffpdf file1 file2

As an alternative:

# create a pdf with the diff as red pixels
magick compare -verbose -debug coder $PDF_1 $PDF_2 -compose src /tmp/$OUT_FILE.tmp

# merge the diff-pdf with background PDF_1
pdftk /tmp/$OUT_FILE.tmp background $PDF_1 output $OUT_FILE

Further readings

Sources