KOReader
A reader you install on a Kindle, Kobo or PocketBook that opens the formats the stock software refuses.
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2 more ways to get KOReader
About KOReader
KOReader is built for e-ink. It runs on Kindle, Kobo, PocketBook, Cervantes and reMarkable devices as well as Android and Linux, and it opens fixed formats like PDF, DjVu, CBZ and CBT alongside reflowable ones like EPUB, FB2, Mobi, DOC, RTF, HTML, CHM and plain text. Scanned PDFs can be reflowed to fit a small screen.
Typesetting is unusually configurable: arbitrary margins, line spacing overrides, external fonts and bundled hyphenation dictionaries for many languages. It talks to Calibre over OPDS, saves to Wallabag, and looks words up in Wikipedia and Google Translate.
Strengths
- Runs on Kindle, Kobo, PocketBook, Cervantes and reMarkable hardware
- Opens PDF, DjVu, CBZ, EPUB, FB2, Mobi, DOC, RTF, HTML, CHM and TXT
- Reflows scanned PDFs so they are readable on a six-inch screen
- Connects to Calibre over OPDS and saves articles to Wallabag
Limitations
- Installing on a locked e-reader means jailbreaking it first, at your own risk
- The settings menus are deep and not self-explanatory
- No official iOS build
- The interface is deliberately plain to suit e-ink refresh rates
Details
- Pricing
- FreeFree and open source under the AGPL 3.0.
- License
- AGPL-3.0
- Developer
- KOReader
- Platforms
- Linux, Android
- How it runs
- Downloadable app
- Account
- Not required
- Works offline
- Yes
- Best suited for
- Making an e-reader open the file formats its maker left out
- Categories
- Ebook tools
- Last verified
- Added
- Provenance
- Selected from the TechWalrus downloads catalog (eBook); facts checked against the developer's own pages, 2 sources on file.
Alternatives to KOReader
Compare allSoftware that can replace KOReader for an important use case, and what changes if you switch.
Koodo Reader
A modern ebook reader for fifteen-plus formats that syncs your library and reading progress through storage you already own.
Koodo Reader targets desktop, Android, iOS and web rather than e-ink hardware, with password locking and note export to Readwise, Notion and Obsidian.
FBReader
Cross-platform ebook reader supporting EPUB, FB2 and Readium LCP.
FBReader covers desktop, Android and iOS with OPDS support, but it is not open source, does not install on e-readers, and some formats need paid add-ons.
Readest
A modern ebook reader for EPUB, PDF, MOBI and comics, with highlights, notes, translation, text to speech and sync across every platform.
Readest runs on desktop, Android and web with highlights and translation, but does not install on e-ink devices and its cloud sync has paid tiers.
KOReader as an alternative
Listings that name KOReader as an alternative.
Foliate
A calm, well-made GTK ebook reader for Linux that stores your notes as plain JSON you can sync yourself.
KOReader is aimed at e-ink devices like Kindle and Kobo plus Android, opens more formats such as DjVu and CHM, and reflows scanned PDFs.
Thorium Reader
Read EPUB books with an accessible desktop reader.
KOReader targets e-ink hardware and Android rather than desktop, opening formats like PDF, DjVu and CHM with a deliberately plain interface.
Similar software
Related functionality, not necessarily a direct replacement.
Calibre
The ebook library manager: view, convert, edit and catalogue books in every major format, and talk to e-readers.
Kavita
A self-hosted reading server for ebooks, comics and manga, with readers built for each format and OPDS for everything else.
Push to Kindle
Sends web articles to a Kindle or other e-reader in readable form.
