PDFio PDF read/write library

PDFio is a simple C library for reading and writing PDF files. The primary goals of PDFio are:

• Read and write any version of PDF file.
• Provide access to pages, objects, and streams within a PDF file.
• Support reading encrypted PDF files.
• Support writing PDF files with digital signatures.
• Extract or embed useful metadata (author, creator, page information, etc.)
• “Filter” PDF files, for example to extract a range of pages or to embed fonts that are missing from a PDF
• Provide access to objects used for each page

PDFio is not concerned with rendering or viewing a PDF file, although a PDF RIP or viewer could be written using it.

Requirements

PDFio requires the following to build the software:

• A C99 compiler such as Clang, GCC, or MS Visual C
• A POSIX-compliant make program
• ZLIB (https://www.zlib.net) 1.0 or higher

IDE files for Xcode (macOS/iOS) and Visual Studio (Windows) are also provided.

Legal Stuff

PDFio is Copyright © 2021 by Michael R Sweet.

This software is licensed under the Apache License Version 2.0 with an (optional) exception to allow linking against GPL2/LGPL2 software. See the files “LICENSE” and “NOTICE” for more information.

News

Announcing PDFio, a Simple PDF Read/Write Library May 30, 2021