# PDF4QT (open-source PDF tool)

> PDF4QT is a free, open-source PDF tool for Windows and Linux. PDF4QT is an open-source PDF toolkit for Windows and Linux, combining powerful desktop applications, command-line tools and a modern MIT-licensed C++/Qt PDF engine. It has 1,497 GitHub stars and is released under the MIT license, and people use it instead of Adobe Acrobat.

This software is consisting of PDF rendering library, and several applications, such as advanced document viewer, command line tool, and document page manipulator application. Software is implementing PDF functionality based on PDF Reference 2.0. It is written and maintained by Jakub Melka.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/JakubMelka/PDF4QT |
| Platforms | Linux, Windows |
| Interface | desktop GUI |
| GitHub stars | 1,497 |
| License | MIT (open source) |
| Replaces | Adobe Acrobat |
| Use it as | PDF editor |
| Language | C++ |
| Website | https://jakubmelka.github.io/ |
| Official | no |
| Category | PDF editors & tools |
| Latest release | v1.6.0.0 (Jun 14, 2026) |
| Last commit | Sep 29, 2026 |

## Install

### Flathub (Linux)

```sh
flatpak install flathub io.github.JakubMelka.Pdf4qt
```

Package page: https://flathub.org/apps/io.github.JakubMelka.Pdf4qt

### AUR (Arch Linux)

Package page: https://aur.archlinux.org/packages/pdf4qt-git

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