Okular
Okular is a free, open-source PDF tool for Windows and Linux. Okular can view and annotate documents of various formats, including PDF, Postscript, Comic Book, and various image formats. It has 1,529 GitHub stars and is released under the GPL-2.0-or-later license, and people use it instead of Adobe Acrobat Reader.
- Official
- Linux
- Windows
- PDF editors & tools
- Actively maintained
About Okular
Okular can view and annotate documents of various formats, including PDF, Postscript, Comic Book, and various image formats. It supports native PDF annotations.
Replaces
Commercial software people commonly use Okular instead of.
- Adobe Acrobat Reader
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What is Okular?
Okular is a free, open-source PDF tool for Windows and Linux. Okular can view and annotate documents of various formats, including PDF, Postscript, Comic Book, and various image formats. It has 1,529 GitHub stars and is released under the GPL-2.0-or-later license, and people use it instead of Adobe Acrobat Reader.
Is Okular free and open source?
Yes. Okular's source code is public on GitHub under the GPL-2.0-or-later license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install Okular?
Download it from the project website or build it from source by following the README on GitHub.
Can Okular replace Adobe Acrobat Reader?
Okular is commonly used as a free alternative to Adobe Acrobat Reader. Features differ, so check that it opens the file formats and covers the workflows you rely on before switching.