DiffPDF =========== DiffPDF is used to compare two PDF files. 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). A couple of example PDF files are provided so that you can try it out. PDF files can be loaded from the GUI (by pressing the File #1 and File #2 buttons), or by specifying them on the command line. More information is available in the program's tooltips. Compiling and Installing DiffPDF ================================ Prerequisites: A C++ compiler that supports tr1, the Qt4 libraries (minimum recommended is Qt 4.5), and the Poppler libraries (including the Qt4 headers). 1. Unpack the archive file, diffpdf-XXX.tar.gz 2. Change directory to diffpdf-XXX 3. Run qmake # On some systems, e.g., Fedora or Ubuntu, run qmake-qt4 4. Run make 5. Copy diffpdf to somewhere on your PATH That's it! Running DiffPDF =============== A pair of tiny example files are available: http://www.qtrac.eu/boson1.pdf and http://www.qtrac.eu/boson2.pdf. You can use these to see the difference between textual and visual comparisons and to get a feel for how DiffPDF works. If you hit a bug, please report it to mark@qtrac.eu. Be sure to include "DiffPDF" in the subject line and specify the version you are using and details of your system, e.g., operating system name and version, compiler name and version, Qt library version, Poppler library version. License ======= This program was written by Mark Summerfield. Copyright (c) 2008-10 Qtrac Ltd. All rights reserved. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option), any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License (in file gpl-2.0.txt) for more details.
