Library
Your Books
Books are synced by the server and cached locally for offline reading.
Reader
Select a synced book
Upload an FB2 book to your account, then read it here. Cached books remain available offline.
Vocabulary
Saved Words
Preferences
Settings
Backend
Start with OPENROUTER_API_KEY=your_key npm start. The default backend model is openrouter/google/gemini-3.5-flash.
Offline
The app shell and current imported book are stored locally for reading without internet. Translation still needs the backend.
Install App
Install BookLingua on your device for a standalone full-screen reader and offline app launch.
If the install button is unavailable, use your browser menu and choose Add to Home Screen or Install app.
Account
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