Duoreader - Bilingual Books

Duoreader — Read, Listen, and Learn Languages Smarter

Duoreader makes it easy to read bilingual texts by aligning translations sentence-by-sentence. Seamlessly switch between two languages as you improve your understanding — and experience the beauty of the original works side by side with their translations.

📖 Read anything you want

Free, with no ads. Duoreader translates what you read as you go. Whether the text has a human translation or not, you always read it side by side in two languages.

🔤 Word-by-word alignment

Tap a sentence to line up both versions word by word and see exactly which phrase maps to which.

📖 AI dictionary

Tap any word for a definition that fits the sentence you are reading.

🔊 Text-to-speech (TTS) & read aloud

Listen with natural voices and adjustable speed, and follow along as the text highlights.

📚 78 classic books, in 11 languages

• Translations into Chinese, English, French, German, Spanish, Italian, Arabic, Japanese, Russian, Korean and Polish
• Austen, Dickens, Orwell, Hemingway and more — read them as they were translated, or let Duoreader translate for you

🌐 1,400+ websites, 24 languages

• Browse by topic — news, science, tech, health, culture, history, travel, food, sport, finance and more
• Read any article in your own language, even where no translation exists yet
• Prefer a site of your own? Paste the URL

📥 Import your own books

Import your own ePUB and PDF files and read them the same way, with bilingual reading, dictionary and TTS.

🔖 Bookmarks & Library

Filter by level and language, and save a bookmark on any paragraph to come back to it later. Your progress and bookmarks sync across devices when you sign in.

📚 Read and Learn

Duoreader supports many languages — Chinese, English, French, Spanish, Italian, Japanese, Arabic, Russian, and more to come.
Whether you're a beginner or a fluent reader, Duoreader helps you explore literature while strengthening your language skills.

Bring your favorite books, read something new every day, and learn languages naturally — all within Duoreader.

Recent changes:
What's new in 5.2.4
- Reading progress is now recorded when you reach the end of an article or a book
- Text-to-speech reports which book it is reading, so audiobook problems get fixed faster
- Web import logs where it breaks (browse, close, and import errors)