Okular
Okular is a versatile document viewer software for KDE. It supports viewing PDFs, EPUBs, ODT, and other document formats. Okular allows annotating, highlighting, commenting on documents as well as filling forms.
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Okular: Versatile Document Viewer Software for KDE
Discover Okular, a popular document viewer software for KDE, supporting multiple formats and offering advanced annotation features.
What is Okular?
Okular is a feature-rich document viewer application designed for the KDE desktop environment on Linux operating systems. It can open and display a wide variety of document formats including PDF, EPUB, PostScript, DjVu, CHM, XPS, ODT, FictionBook, ComicBook, Plucker, and others.
Some of the key features of Okular include:
- Smooth scrolling and responsive zooming and rotation for easy document navigation
- Support for adding annotations, highlights, bookmarks to PDF documents
- Ability to insert and fill form fields in PDF documents
- Tabs for opening multiple documents within a single window
- Document editing tools for rotating, cropping and resizing pages
- Presentation mode to provide a distraction-free reading experience
- Batch document processing tools like print, export and mail merge
- Image conversion and OCR support for scanned documents
- Customizable interface with support for themes and different view modes
Overall, Okular aims to provide a full-featured document viewing solution that meets the needs of casual and power users alike. Its tight integration with the KDE desktop makes it a great default document reader for KDE-oriented Linux distributions.
Okular Features
Features
- Supports viewing PDF, PostScript, DjVu, CHM, XPS, ePub and other formats
- Allows annotating, highlighting and adding comments to PDFs
- Has different view modes like single page, facing, overview grid
- Supports tabs for opening multiple documents
- Has presentation mode for slideshows
- Can fill interactive PDF forms
- Allows saving filled forms as PDF or text
- Has search functionality to find text in documents
- Can encrypt PDF files
- Has document information and metadata viewer
- Supports table of contents navigation
- Has different reflow modes for reading ePubs
- Can print documents to system printer
Pricing
- Open Source
Pros
Free and open source
Clean and intuitive interface
Good performance with large PDFs
Lots of annotation and markup tools
Supports many document formats
Available on Linux, Windows, macOS
Cons
Limited format support compared to some alternatives
Annotation features may be limited for some users
No cloud storage integration
Less features than paid alternatives
Official Links
The Best Okular Alternatives
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