What is DiffPDF

PDF file comparison software company is doing consulting Qtrac of C + + and Phython, such as training, have provided a free download.
Go to explicit the differences between the two PDF files.
Source also has been published, but is provided as well as Windows, and Mac version is also Linux.

System requirements

OS : Windows

How to download

  1. Go to the website's Qtrac.
  2. Home page appears, click the section in the place of DiffPDF proceeded a little page of "Open Source Software".
  3. DiffPDF page that appears, at the end of most of the English description "diffpdf-xxzip" Click to download (xxxMB).

How to install

  1. Just unzip the downloaded file to any location.


How to use

  1. Start by double-clicking the "diffpdf.exe" group in the unzipped files.
  2. DiffPDF screen appears, click the "File # 1" button.
  3. When the file selection dialog box appears, specify the PDF file of the original comparison.
  4. Click on the "File # 2" button.
  5. File selection dialog appears again, you specify the destination PDF file of the comparison.
  6. When you click the "Compare" button on the right of the screen, the difference of the PDF file to which the yuan compared with the comparison will be displayed in two panes on the left side of the screen.
  7. In the "Previous" "Next" button on the right of the screen, you can move the page.
  8. If you click the "Compare" button after you check the "Appearance" in the frame "Compare" the right of the screen, the comparison of the difference in appearance is possible.