koreader
About koreader
KOReader is a document viewer designed primarily for e-ink devices. It supports a wide range of document formats including PDF, DjVu, EPUB, and FB2. The application is optimized for devices like Kindle, Kobo, PocketBook, and Android, providing a customizable reading experience.
KOReader offers features tailored for e-ink displays, such as adjustable text contrast and paginated menus. It integrates with various content providers like calibre, Wallabag, and Wikipedia, enhancing its functionality beyond basic reading. The application is also extensible through plugins, allowing users to add additional features as needed.
Key features
- Supports multiple document formats including PDF, DjVu, EPUB, and FB2
- Customizable reader view with adjustable margins and line spacing
- Integrated with calibre, Wallabag, Wikipedia, and Google Translate
- Optimized for e-ink devices with paginated menus and adjustable text contrast
- Extensible via plugins
- Multi-lingual user interface with bundled hyphenation dictionaries
Download v2026.03
Mar 17, 2026LinuxLinux
Frequently asked questions
- Is koreader free?
- Yes. koreader is free and open-source software, distributed under the AGPL-3.0 license.
- Which platforms does koreader support?
- koreader provides downloads for Linux, Android.
- What is the latest version of koreader?
- The latest version is v2026.03, released on Mar 17, 2026.
- What devices does KOReader support?
- KOReader runs on embedded devices such as Cervantes, Kindle, Kobo, PocketBook, reMarkable, as well as Android and Linux computers.
- How can I install KOReader?
- Installation steps vary by device. Specific instructions for Android, Cervantes, Kindle, Kobo, Linux, PocketBook, and reMarkable are available in the wiki.
- What formats does KOReader support?
- KOReader supports fixed page formats like PDF, DjVu, CBT, CBZ, and reflowable e-book formats such as EPUB, FB2, Mobi, DOC, RTF, HTML, CHM, TXT.
- Is KOReader free to use?
- Yes, KOReader is licensed under the AGPL Licence.
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