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This is a category of articles relating to free software for making or viewing Portable Document Format (PDF) documents. That is, software which can be freely used, copied, studied, modified, and redistributed by everyone that obtains a copy. Typically, this means software which is distributed with a free software license, and whose source code ...
Software to view or edit the internal structures of PDF documents, and merge them. Pdftk: GNU GPL: Yes Yes Yes FreeBSD, Solaris Yes Command-line tools to edit and convert documents; supports filling of PDF forms with FDF/XFDF data. GUI front-end exists (see PDFChain). PDFsam Basic: AGPLv3 for version 3, GPLv2 for previous versions 2.x Yes Yes Yes
PDF is a complex format designed for publishing output, not for any further modifications. PDFedit is a low-level tool for technical users that provides structured access to the internal structure of the PDF file. It may require familiarity with PDF specifications to be able to make substantial modifications.
PDFtk (short for PDF Toolkit) is a toolkit for manipulating Portable Document Format (PDF) documents. [ 3 ] [ 4 ] It runs on Linux , Windows and macOS . [ 5 ] It comes in three versions: PDFtk Server ( open-source command-line tool ), PDFtk Free ( freeware ) and PDFtk Pro ( proprietary paid ). [ 2 ]
Free and open-source software portal; As follows from its parents, this category is for PDF readers/viewers that are free software — distributed with their source code and under a free software license.
OpenPDF is a free Java library for creating and editing PDF files with the Mozilla Public License and the GNU Library General Public License free software license. It is a fork of iText, created because the license of iText was changed from LGPL / MPL to a dual AGPL and proprietary license in order for the original authors to sell a proprietary version of the software. [3]
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Qiqqa (pronounced "Quicker") is a free and open-source [1] [2] software that allows researchers to work with thousands of PDFs. [3] It combines PDF reference management tools, a citation manager, and a mind map brainstorming tool.