BookLingua Cloud

Sign in to read

Your books, positions, settings, and expressions are synced through the server. Cached books remain readable offline after sign-in.

Create account

BookLingua

Reader

No book

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

Not signed in.