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Cool Reader vs Okular

Professional comparison and analysis to help you choose the right software solution for your needs.

Cool Reader  icon
Cool Reader
Okular icon
Okular

Cool Reader vs Okular: The Verdict

Last updated: May 2026 · Comparison by Sugggest Editorial Team

Feature Cool Reader Okular
Sugggest Score
Category News & Books Office & Productivity
Pricing Open Source Free

Product Overview

Cool Reader
Cool Reader

Description: Cool Reader is an open-source eBook reader available for Windows, Linux, Android and other platforms. It supports a variety of eBook formats including EPUB, FB2, DOC and more. Key features include customizable themes/skins, text-to-speech, bookmarks and annotations.

Type: software

Pricing: Open Source

Okular
Okular

Description: 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.

Type: software

Pricing: Free

Key Features Comparison

Cool Reader
Cool Reader Features
  • Supports wide variety of eBook formats including EPUB, FB2, DOC, TXT, RTF, HTML, CHM, PDB, PDF
  • Customizable themes/skins
  • Adjustable text size, fonts, colors, margins
  • Text-to-speech with multiple voices
  • Bookmarks and annotations
  • Dictionary lookup
  • Supports reading in over 40 languages
  • Can open books from cloud storage services like Dropbox
  • Available on Windows, Linux, Android, and other platforms
Okular
Okular 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

Pros & Cons Analysis

Cool Reader
Cool Reader
Pros
  • Free and open source
  • Lightweight and fast
  • Highly customizable reading experience
  • Supports many formats
  • Available on multiple platforms
Cons
  • Limited formatting options compared to some other eBook readers
  • Less features than some commercial eBook readers
  • PDF support could be better
  • No native support for ePub 3
Okular
Okular
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

Pricing Comparison

Cool Reader
Cool Reader
  • Open Source
Okular
Okular
  • Free

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