BookShift – E-Book Converter

Convert e-books between popular formats, including Kindle, right in your browser. Fully offline: your books stay on your device.

📚 BookShift is a fast, private e-book converter that lives in your browser. Click the toolbar icon, drop a book, choose the format you need and click Convert — done in seconds. ✨ WHAT IT DOES • Turns an EPUB or FB2 book into a Kindle book, with a working table of contents and cover • Opens Kindle books and converts them for other e-readers and apps • Saves a Word document or a plain text file as a proper e-book with chapters • Keeps chapter structure, title, author, language, cover and illustrations • Shows the book's cover and chapter count as soon as you drop the file • Remembers your last 10 conversions • Dark and light themes 🔒 PRIVACY BookShift works completely offline, inside your browser. Your books never leave your device: nothing is uploaded, there is no tracking, and no account is needed. The extension requests no permissions. ⚡ PERFORMANCE Everything runs locally, so there is no upload and no waiting in a queue. Even long novels convert in a few seconds. 📖 SUPPORTED FORMATS • E-book formats: EPUB and FictionBook (FB2, including zipped FB2) • Kindle: AZW3 for current devices, MOBI for older ones • Documents: Word (DOCX), RTF, plain text and web pages (HTML) Any supported format can be converted into any other. 💡 TIPS • For a Kindle, choose AZW3 and copy the file to the device over USB. Older Kindles (Kindle Keyboard and earlier) need MOBI. • Amazon's Send to Kindle e-mail service accepts EPUB, so convert to EPUB if you send books that way. • Word files created by BookShift use real heading styles, so Word's Navigation Pane lists every chapter. • In text files, chapter headings are detected automatically, including Cyrillic text in the Windows-1251 encoding. • DRM-protected books cannot be converted.