QPDF is a C++ library and set of programs that inspect and manipulate the structure of PDF files. It can encrypt and linearize files, expose the internals of a PDF file, and do many other operations useful to end users and PDF developers.
This software performs structural, content-preserving transformations on PDF files. It could have been called something like pdf-to-pdf. It also provides many useful capabilities to developers of PDF-producing software or for people who just want to look at the innards of a PDF file to learn more about how they work.
QPDF is not a PDF content creation library, a PDF viewer, or a program capable of converting PDF into other formats.
Features include:
- Linearization (web optimization).
- Encrypt PDF files.
- Decrypt PDF files.
- Inspect PDF files.
- Provides many useful capabilities to developers of PDF-producing software.
- Understands and converts PDF files that use compressed object streams.
- Checks for structural errors.
- Inspecting stream contents.
- Extracts objects from PDF files.
Website: qpdf.sourceforge.io
Support: Manual
Developer: Sid Steward
License: GNU GPL v2
QPDF is written in C++. Learn C++ with our recommended free books and free tutorials.
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