By default the comparison is of the text on each pair of pages, but
comparing the appearance of pages is also supported (for example, if a
diagram is changed or a paragraph reformatted). It is also possible to
compare particular pages or page ranges. For example, if there are two
versions of a PDF file, one with pages 1-12 and the other with pages
1-13 because of an extra page having been added as page 4, they can be
compared by specifying two page ranges, 1-12 for the first and 1-3, 5-13
for the second. This will make DiffPDF compare pages in the pairs (1,
1), (2, 2), (3, 3), (4, 5), (5, 6), and so on, to (12, 13).

• Sergey V Turchin
• Fr. Br. George

• diffpdf
• diffpdf-debuginfo