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KOReader

Ebook reader with support for many formats like PDF, DjVu, EPUB, FB2, CBZ.
## Main features

* **portable**: runs on embedded devices (Cervantes, Kindle, Kobo, PocketBook), Android and Linux computers. Developers can run a KOReader emulator in Linux and MacOS.

* **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.

* **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.

* **integrated** with *calibre* (search metadata, receive ebooks wirelessly, browse library via OPDS), *Wallabag*, *Wikipedia*, *Google Translate* and other content providers.

* **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.

* **extensible**: via plugins

* **and much more**: look up words with StarDict dictionaries / Wikipedia, add your own online OPDS catalogs and RSS feeds, online over-the-air software updates, an FTP client, an SSH server, …

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Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version v2022.08 (9215) suggested Added on 2022-09-04

    This version requires Android 4.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
      (10)
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • modify system settings
      Allows the app to modify the system's settings data. Malicious apps may corrupt your system's configuration.
    • query all packages
      Allows an app to see all installed packages.

    Download APK 30 MiB PGP Signature | Build Log

  • Version v2022.07 (9193) - Added on 2022-08-04

    This version requires Android 4.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
      (10)
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • modify system settings
      Allows the app to modify the system's settings data. Malicious apps may corrupt your system's configuration.
    • query all packages
      Allows an app to see all installed packages.

    Download APK 30 MiB PGP Signature | Build Log

  • Version v2022.06 (9144) - Added on 2022-06-27

    This version requires Android 4.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
      (10)
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • modify system settings
      Allows the app to modify the system's settings data. Malicious apps may corrupt your system's configuration.
    • query all packages
      Allows an app to see all installed packages.

    Download APK 30 MiB PGP Signature | Build Log