
KOReader
An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Kindle, Kobo, PocketBook, Linux and Android devices
- Free • Open Source
- Ebook Reader
- PDF Reader
- Linux
- Android
- Kobo
- PocketBook Reader
- F-Droid
- Kindle Fire
- Flathub
- AppImageHub
What is KOReader?
KOReader is a document viewer for E Ink devices. Supported fileformats include EPUB, PDF, DjVu, XPS, CBT, CBZ, FB2, PDB, TXT, HTML, RTF, CHM, DOC, MOBI and ZIP files. It’s available for Kindle, Kobo, PocketBook, Android and desktop Linux.
Main features:
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portable: runs on embedded devices (Cervantes, Kindle, Kobo, PocketBook, reMarkable), Android and Linux computers. Developers can run a KOReader emulator in Linux and MacOS.
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multi-format documents: supports fixed page formats (PDF, DjVu, CBT, CBZ) and reflowable e-book formats (EPUB, FB2, Mobi, DOC, CHM, TXT). Scanned PDF/DjVu documents can also be reflowed with the built-in K2pdfopt library.
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full-featured reading: multi-lingual user interface with a highly customizable reader view and many typesetting options. You can set arbitrary page margins, override line spacing and choose external fonts and styles. It has multi-lingual hyphenation dictionaries bundled into the application.
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integrated with calibre (search metadata, receive ebooks wirelessly, browse library via OPDS), Evernote (export hightlights), Wallabag, Wikipedia, Google Translate and other content providers.
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optimized for e-ink devices: custom UI without animation, with paginated menus, adjustable text contrast, and easy zoom to fit content or page in paged media.
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extensible: via plugins
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and much more: look up words with StarDict dictionaries / Wikipedia, add your own online OPDS catalogs and RSS feeds, share ebooks with other KOReader devices wirelessly, online over-the-air software updates, an FTP client, an SSH server, …
KOReader Screenshots



KOReader Features
KOReader information
Supported Languages
- English
GitHub repository
- 12,504 Stars
- 1,082 Forks
- 513 Open Issues
- Updated
Comments and Reviews
Said about KOReader as an alternative
Multi format reader optimized for Android eink devices
Tags
- PDF Reader
- epu
- EPUB Reader
- djvu
- Ebook Reader
It's a great replacement for the default reader pre-installed on my Pocketbook Touch Lux 4, many customization options, support for a wide range of formats (pdf reflow), custom dictionaries, fonts and more. There are some platform specific issues related to screen suspension on my device and it seems that none of the devs own a Pocktbook themselves, so it may take a while before these get resolved. I can't say how well it holds up on other e-Ink devices by comparison, but overall it is still a step up from what you get out of the box and it gets updated on a monthly basis.
Well, seems like most of the issues I had have been fixed by the latest update. [Edited by sowij, September 21]
Great for eink devices but if you use a normal android device use Librera, its much better.