PDF4QT is a free PDF editor that is based on the Qt framework. It includes a C++ library, applications for viewing and editing PDF documents, and a command line tool. PDF4QT is available for Windows and Linux operating systems.
It offers a modern solution for viewing, editing, and rendering PDF documents, suitable for both users and developers. Developers can utilize the C++ library and command line tool in scripts, while users can take advantage of the four applications that provide various features.
The application offers basic browsing functionality and many other features, such as encryption, document reading, digital signature verification, annotation editing, text searching using regular expressions, converting pages into images, and more. Additionally, there are several available plug-ins.
Use-cases
These applications are primarily used by users who want to view, edit, manipulate, or compare PDF documents. Screenshots of the applications can be found in the screenshots section of the webpage.
Features
Multithreading support
Hardware-accelerated rendering
Encryption
Color management
Optional content handling
Text layout analysis
Signature validation
Annotations
Form filling
Text-to-speech capability
Editing
File attachments
Optimization (compressing documents)
Command line tool
Audio book conversion
Internal structure inspector
Document comparison
Static XFA support (read-only, simple XFA only)
Electronically/digitally sign documents
Public key security encryption
Systems
Windows
Linux: Arch Linux, Ubuntu, Fedora, Debian, and LinuxMint
macOS
License
The project is hosted on Github and is licensed under LGPLv3, GNU Library or Lesser General Public License version 3.0 (LGPLv3)
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