Multi-platform document viewer offering extensive format support, including PDF, comics, images, EPUB, and Markdown, with annotation tools, sidebar previews, text-to-speech, DRM management, cross-platform compatibility, and integration with KDE Frameworks libraries.
Cost / License
- Free
- Open Source
Application types
Platforms
- Windows
- Linux
- BSD
- KDE Plasma
- Snapcraft
- Linux Mobile
- Flathub
- Haiku




Comments about Okular as an Alternative to SumatraPDF
If you want a basic PDF viewer, this will probably fit the bill. It's simple and ligthweight. I used to use Foxit Reader, and found Okular to be a good FOSS replacement.

Most users think Okular is a great SumatraPDF alternative.
Okular is the most popular Linux alternative to SumatraPDF.
Okular is the most popular Open Source alternative to SumatraPDF.
- Okular is Free and Open Source




















































Because both programs are design to see documents.