Liseur

300PSA · Books & Reference

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8.0

android

AI summary

Open-source EPUB reader for Android with support for calibre-web and Komga servers. Features paginated rendering, four reading themes, highlights and notes, offline dictionary support, and now syncs reading settings across devices. Version 0.18.0 adds Project Gutenberg free books, improved page numbering, SVG cover support, and full translations for German, Spanish, French, Italian, and Russian.

Generated by AI. May contain inaccuracies.

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About this app

Liseur is an open-source EPUB books reader for Android, and a client for calibre-web and Komga: a modern reader that is equally at home with the files on your phone and with your own book server.

👀 Reading * Paginated EPUB rendering through the Readium toolkit, full screen by default * Tap right to go forward, left to go back, the middle for the controls; volume keys work too * A whole page always fits the screen, with no stray scrolling to catch the last line * Four reading themes (Light, Sepia, Dark, Black), independent of the app's own theme * Four bundled open fonts or the publisher's own, plus size, line spacing, margins and brightness * Time left in the chapter, time left in the book, page or percentage, and a scrubber with chapter ticks

🪧 Marking up and looking up * Highlights in four colours, notes, and bookmarks with a corner ribbon * A notebook of everything you marked in a book, exportable as Markdown * Search the whole book, with snippets and jump-to highlighting * Definitions for any selected word, or a hand-off to an offline dictionary app. Online lookups are off until you turn them on, and you choose which Wiktionary edition or mirror answers them

📚 Your library * Index folders of EPUBs, covers and all * Books you are using sort to the front; finished ones get a tick * Pull to refresh picks up whatever changed behind the app's back

🌐 Your own server * calibre-web: one screen sets it up with URL, username and password, and Liseur works out the catalog, download rights and sync token * Komga: paste the server address and an API key * Your server's books merge into the same library with a cloud badge; tap one to download and open it * Reading positions sync both ways, through calibre-web's Kobo protocol or Komga's read-progress API * Remove the copy on the device, or delete the book from the server

🎉 Free software * No trackers, no analytics, no proprietary dependencies. The only network traffic is to the book server you configured and, if you switch online definitions on, to the dictionary site you chose.

📄 License MIT. Bundled fonts are under the SIL Open Font License.

🎯 Project author:github@chmouel

epub reader open source self-hosted offline ebook calibre

What's new

v0.18.0Sep 19, 2026

Liseur can now start an empty library with free Project Gutenberg books, load additional books later, sync reading settings across devices, and update a book server address without disconnecting. EPUB covers, page numbers, and reader controls are more reliable, and full translations are now included for German, Spanish, French, Italian, and Russian.
▼Reading ・Sync reading settings between devices: Fonts, themes, margins, palette choices, and reading preferences now travel with your account via liseur-sync (#227, #232). Device-specific controls like hardware volume buttons and e-ink screen refresh settings remain local.
・Page numbers move on every turn: Page counters in the footer now measure actual screens rather than file chunks, advancing predictably on every page turn and providing cleaner total page estimates (#236).
・Tappable text and brightness controls: Tap the letter labels or brightness icons in the appearance menu to adjust text size and screen brightness in precise steps (#235).
・Cleaner scrolling and control edges: Bottom reading controls extend to the screen edge in scroll mode, and control panels fade softly into the page background (#229).
▼Library ・Start an empty library with Project Gutenberg books: An empty library offers a shelf of free public domain books from Project Gutenberg, customizable by category, language, and initial catalog size (#226, #237).
・Load more free books on demand: Tap "Load 50 more books" on a Project Gutenberg shelf to fetch further titles in the same language and category without losing existing downloads (#239).
・Support for SVG book covers: Books using SVG cover artwork now render properly as shelf thumbnails (#234).
・Selectable download batch sizes: Choose how many books to download at once when fetching whole collections from a server.
・Dismissible catalog notices: Notices for large or partial OPDS catalogs can now be dismissed.
・New translations: Complete Italian translations are now included, alongside updated localization for German, Spanish, French, and Russian (#237).
▼calibre-web ・Edit server address without disconnecting: Change your book server's address directly without losing downloaded files, reading positions, annotations, or history.
・Preserve exact catalog addresses: OPDS server URLs are requested exactly as typed, ensuring compatibility with servers that require specific slashes or query strings (#226).
▼Fixes ・Loading spinner color consistency: Opening a book keeps the app's accent color for the loading indicator rather than taking on paper colors prematurely (#240).
・Status bar visibility over dark sheets: System status bar icons adapt automatically when reading themes change while bottom sheets are open (#228).
・Robust catalog retrieval: Temporary server rate limits or feed reordering during Gutenberg background updates no longer cause books to be skipped or hidden.
▼Under the hood ・Unified custom server connections: Retired dedicated Grimmory server options in favor of standard Custom OPDS and KOReader sync endpoints, automatically migrating existing accounts while preserving local progress and downloads (#230).