diff-pdf

Tool for comparing two PDFs. More information: https://github.com/vslavik/diff-pdf.

• Compare PDFs, indicating changes using return codes (0 = no difference, 1 = PDFs differ):

diff-pdf {{path/to/a.pdf}} {{path/to/b.pdf}}

• Compare PDFs, outputting a PDF with visually highlighted differences:

diff-pdf --output-diff={{path/to/diff.pdf}} {{path/to/a.pdf}} {{path/to/b.pdf}}

• Compare PDFs, viewing differences in a simple GUI:

diff-pdf --view {{path/to/a.pdf}} {{path/to/b.pdf}}