* Namely, ensure zoom_mode is consistent with genus & type *both ways*. (I only dealt with the "no zoom_mode" case in my original fixup). Because documents with settings dating back from before the new zoom modes had "old" zoom_mode settings mixed with "new" genus/type defaults that didn't agree with each other. It lead to super-confusing ConfigDialog behavior, because ConfigDialog was in fact not reflecting the reality. (As the source of truth is actually `zoom_mode`). * There was a snafu in manual mode, because of the extremely weird way prefixes are handled by Configurable/ReaderConfig/DocSettings/ConfigDialog. So, make sure we only have a *single* zoom_factor, and that it's updated and saved properly under the right name everywhere. Fixes inconsistencies between first swapping to manual mode, and what the ConfigDialog said/did (because again: possibly a lie), vs., re-opening the same document, which would magically use *different* settings, closer to what was expected (but still broken because of the prefix mismatch and a disagreement on defaults between the two variants). Fallout from #6885
KOReader is a document viewer primarily aimed at e-ink readers.
Download • Wiki • Developer docs
Main features
-
portable: runs on embedded devices (Cervantes, Kindle, Kobo, PocketBook, reMarkable), 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), Evernote (export hightlights), 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, share ebooks with other KOReader devices wirelessly, online over-the-air software updates, an FTP client, an SSH server, …
Please check the wiki to discover more features and to help us document them.
Screenshots
Installation
Please follow the model specific steps for your device:
Android • Cervantes • Kindle • Kobo • Linux • Pocketbook • reMarkable
Development
Setting up a build environment • Collaborating with Git • Building targets • Porting • Developer docs
Support
KOReader is developed and supported by volunteers all around the world. There are many ways you can help:
- fix bugs and implement new features
- translate the program into your language or improve an existing translation
- document lesser-known features on the wiki
- help others with your knowledge on the forum
Right now we only support liberapay donations, but you can also create a bounty to motivate others to work on a specific bug or feature request.
