csBooks is a free, multi-format eBook reader, PDF reader, comic reader (CBZ/CBR), MOBI reader, DJVU reader and DOCX reader. You can import and read your books, comics, and documents offline with customization and sync online on multiple devices. It also offers beautiful themes — all in one smart library app.

Whether you love eBooks, comics, or documents, csBooks automatically generates cover thumbnails, tracks your reading progress, and gives you powerful customization for a truly comfortable reading experience.

✨ App Features

📚 Multi-Format eBook, Comic & Document Reader
Read ePub, PDF, CBZ, CBR, MOBI, DJVU and DOCX files seamlessly.
Manage your entire book and comic library from a single app.
Enjoy fast, offline reading without ads or distractions.

🔖 Smart Bookmarks & Reading Progress
Automatically track your reading position for every book or document.
Instantly jump to any page with intuitive navigation.
Sync your reading progress across mobile and desktop apps.

🎨 8 Elegant Reading Themes
Choose from 8 stylish themes for day, night, and eye comfort.
Customize text size, font style, and margins for a perfect reading experience.
Full-screen mode for distraction-free reading.

📥 Easy Import & Cloud Sync
- Import ePub, PDF, CBZ, CBR, MOBI, DJVU and DOCX files directly from your device.
- Securely store your library in csBooks Cloud Storage.
- Access your books, comics, and documents across all your devices.

🖼️ Auto Cover Thumbnails
csBooks automatically extracts book cover art for a beautiful library.
View your library in Card View or List View for easier browsing.

🧹 Beautiful Library Management
Clean, modern interface designed for usability and elegance.
Organize and access your books, comics, and documents with ease.

Why Choose csBooks?
Save storage and time by managing all your eBooks, comics, and documents in one place. Customize your reading experience, sync across devices, and enjoy a fast, ad-free reader built for all major formats.

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Developer Contact: caesiumstudio@outlook.com