You Read, Digest and Get Insight.
Readest is a free, open-source EPUB and PDF reader designed for deep, immersive reading. Enjoy highlights, notes, split-screen reading, text-to-speech, and cloud sync across macOS, Windows, Linux, Android, iOS, and the Web.
Parallel Read,
Side by Side.
Compare texts, translations, or ideas with Parallel Read, our split-screen book reader. Read two ebooks or documents side by side — perfect for researchers, students, language learners, and anyone who reads more than one book at a time.
Read books
in style.
Personalize your reading experience with customizable themes, fonts, and colors. Whether you prefer light mode, dark mode, or a sepia tone, Readest adapts to your eyes and environment for comfortable, distraction-free reading.
Break barriers with
effortless understanding.
Instantly translate paragraphs with DeepL integration or look up terms on Wikipedia — right inside your book. Readest's built-in translation and lookup tools make it the ideal ebook reader for multilingual readers and curious minds.
Refine Your Reading Experience
Explore a powerful EPUB and PDF reader packed with features for curious, passionate readers — from annotations to text-to-speech and cross-device sync.
Parallel Read
Read two books side by side in split-screen view with synchronized scrolling and navigation.
Reading Essentials
Highlight passages, bookmark pages, take notes, and search across your entire ebook library.
Customization
Adjust fonts, margins, line spacing, and theme colors for a comfortable, personalized reading experience.
Smart Tools
Look up words, translate text with DeepL, and browse Wikipedia — all without leaving your book.
Cross-Platform Sync
Pick up where you left off on any device. Your highlights, notes, and reading progress sync automatically.
Read Aloud
Listen to any ebook with AI-powered text-to-speech (TTS). Turn your reading into an audiobook experience.