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MediaAlternative to Adobe Acrobat ReaderAlternative to PreviewAlternative to Foxit Reader

Okular

The universal document viewer for PDF, Postscript, DjVu, CHM, XPS, and ePub by KDE.

View on GitHub Visit website
LicenseGPL-2.0
GitHub stars1.5k
Last commit1 weeks ago
Tags6 topics
QtKdeDigital SignaturesUniversal ViewerProductivityPdf Annotator
Overview

Why consider Okular?

Okular is KDE's universal document viewer. It supports PDF, PostScript, TIFF, CHM, DjVu, and EPUB files, offering rich PDF annotations (highlighter, pop-up notes, stamps), digital signatures, and text-to-speech reading.

Guided learning

Learn Okular by building

Practical setup notes, real use cases, and copy-ready examples in one focused guide.

1 min read 2 sections
In this guide2 sections

Overview of Okular

Okular provides comprehensive PDF form filling, freehand drawings, inline text notes, and verification of cryptographic signatures.

Installation

bash
1# Flatpak
2flatpak install flathub org.kde.okular

Okular is licensed under the GNU General Public License v2.0 (GPL-2.0).

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Okular FAQs

Okular is listed as a Media tool on TiloBox. Review the overview, features, and official documentation on this page to decide whether it solves your specific workflow.

Start with the project's GitHub repository and official website for supported installation and deployment instructions. Test the setup with representative data or a small project before rolling it out more widely.

Okular is listed under the GPL-2.0 license. Read the complete license text and the project's notices before using, modifying, or distributing the software.

Production readiness depends on your requirements. Review maintenance activity, security practices, documentation, backup and upgrade procedures, and compatibility with your stack; then validate it in a non-production environment.

Okular is listed as an alternative to Adobe Acrobat Reader. Compare the core workflow, deployment model, integrations, and licensing against your must-have requirements before switching.