BookShift – E-Book Converter

About

📚 BookShift turns every new tab into a powerful e-book format converter.
Drop a file, pick a target format, click Convert — done in seconds.

✨ FEATURES

• Drag & drop or click to browse
• Supports EPUB, FB2, MOBI / AZW, and TXT
• Convert between: EPUB ↔ FB2, EPUB → TXT, FB2 → TXT, TXT → EPUB / FB2, MOBI → EPUB / FB2 / TXT
• Preserves chapter structure, titles, author info, and cover images
• Conversion history — see your last 10 conversions at a glance
• Dark & Light themes
• Compact new-tab design — your links and shortcuts are just one click away

🔒 PRIVACY

BookShift works 100% offline, inside your browser.
Your books never leave your device. No analytics. No tracking. No accounts.

⚡ PERFORMANCE

All conversions happen client-side in JavaScript — no server round trips.
Typical EPUB ↔ FB2 conversion takes under 2 seconds even for large books.

📖 SUPPORTED FORMATS

  Input:  EPUB (.epub), FictionBook (.fb2), MOBI / AZW (.mobi, .azw, .prc), Plain Text (.txt)
  Output: EPUB 3.0, FictionBook 2.0 (.fb2), Plain Text (.txt)

💡 TIPS

• Metadata (title, author, language) is preserved automatically
• Cover images are carried over when converting EPUB ↔ FB2
• TXT conversions detect chapter headings automatically