Convert between EPUB, MOBI, AZW3, FB2, TXT & PDF — 100% in your browser
100% browser-based — no server uploads, no cloud processing
Free forever — no account or subscription required
Supports batch conversion for multiple files at once
Works on any device — desktop, tablet, and mobile
Results available in seconds — no server queue or wait time
Files are cleared immediately after processing for maximum privacy
Readable on dedicated e-reader devices and apps
Supports adjustable text size and font preferences
Efficient for long-form text distribution
E-reader device reading (Kindle, Kobo, etc.)
Digital book publishing and distribution
Personal reading library management
Academic and professional reference materials
Test rendering on Kindle, Kobo, and Apple Books for cross-reader compatibility
Use 72 DPI for cover images to keep file size small and fast to download
Validate EPUB files with EPUBcheck before uploading to publishing platforms
Include a fallback font specification in case the device font is unavailable
Drag & drop your file or click to browse
Files are processed instantly in your browser
Save your converted or processed file
Yes — all conversions are 100% free with no limits, no watermarks, and no sign-up required.
Completely private. Conversions happen entirely in your browser. Files are never uploaded to any server.
All major eBook formats are supported. Select your file to see the available conversion options.
Free, instant, and 100% private. Your files are processed locally in your browser.