Liseur

Liseur is an EPUB reader for Android built on the Readium toolkit. It opens books from local folders, can read them aloud to you, and is also a client for calibre-web, Komga, BookOrbit, liseur-sync and OPDS catalogs. Books from every source show up on the same shelf.

Read aloud

Liseur reads any book to you, highlighting each sentence and turning the page as it goes. By default it uses the voices already on your phone, so it works offline and the text stays on the device. For other voices, you can connect a speech server: one you run yourself, such as Kokoro, or a hosted service like OpenAI, Mistral or Groq.

* Keeps reading with the screen off, with controls in the notification
* Speed from 0.75× to 2×
* Sleep timer, or stop at the end of the chapter
* Remembers the voice you picked for each language

Reading

* Paginated or continuous scroll, per book or for the whole library
* Bundled fonts (Literata, Vollkorn, Atkinson Hyperlegible, Inter), the publisher's fonts, or fonts you import
* Light, sepia, dark and black themes
* Adjustable margins, line spacing and brightness
* Auto-scroll that continues across chapters
* Footer with the page number, what is left of the chapter and estimated time left
* E-ink mode without animations, with refresh control on Onyx devices
* Highlights in six colours, notes and bookmarks, exportable as Markdown
* Full-text search
* Footnotes open in a popup
* Dictionary lookup through Wiktionary (off by default) or an installed dictionary app

Library

* Local folders, including the SD card
* Series grouped in reading order, with missing volumes shown
* Built-in Project Gutenberg browser
* Home-screen widgets for the current book and reading time
* ZIP backup of settings, fonts, reading positions and annotations

Sync

* Reading position syncs through calibre-web (Kobo sync), Komga, BookOrbit or liseur-sync
* A Custom connection pairs any OPDS catalog with any KOReader sync (kosync) server
* With liseur-sync: settings backup per device and reading statistics across devices

Privacy

No ads, trackers, analytics or account. Liseur only connects to the book and speech servers you add, to the dictionary site if you turn it on, and to Project Gutenberg when you browse it. It does not use Google Play services or any proprietary library.

MIT licensed. Source code and issue tracker: https://github.com/chmouel/liseur

Translate selected passages or a whole book page by page. Page translations are saved on your device and return when you reopen a book without another request. The reader follows your place and restores the original text when you stop. Read-aloud resumes near where you paused. Dictionary lookups can show base-word meanings and Wiktionary translations in another language. On wide screens, Settings can stay beside its pages. The footer is locked by default; hold it to change what it shows.