E-book Converter

Convert e-books between EPUB, MOBI, AZW3, FB2, PDF, and DOCX formats. Transform your digital books for any e-reader device with preserved formatting.

ebook.supportedFormats

E-book Format Comparison

Each e-book format has its strengths. Understanding these differences helps you choose the right format for your device and use case.

FormatDescriptionCompatible Devices
EPUBOpen standard format with reflowable text and rich formatting supportApple Books, Kobo, Nook, most e-readers (except Kindle)
MOBILegacy Amazon Kindle format with basic formattingOlder Kindle devices, Kindle apps
AZW3Modern Amazon Kindle format with enhanced typographyKindle Paperwhite, Kindle Oasis, Kindle apps
FB2XML-based format popular in Russia and Eastern EuropeFBReader, CoolReader, various Android apps
PDFFixed-layout format preserving exact page appearanceAll devices, best for printing and complex layouts

How to Convert E-books

  1. Select your target format from the dropdown menu above
  2. Click "Select file" and choose your e-book or document
  3. Wait for the conversion to complete
  4. Download your converted e-book

Common Use Cases

  • Reading on Kindle — Convert EPUB to MOBI or AZW3 to read on your Kindle device
  • Reading on Kobo — Convert Kindle books to EPUB for Kobo or other e-readers
  • Archiving — Convert to EPUB for long-term storage in an open format
  • Printing — Convert to PDF for printing or sharing with fixed layout

Technical Details

Our e-book converter uses industry-standard tools to ensure high-quality conversions:

  • Preserves chapter structure and table of contents
  • Maintains formatting including fonts, styles, and paragraphs
  • Extracts and embeds cover images when available
  • Converts embedded images with quality preservation

Important Notes

Some limitations apply to e-book conversions:

  • DRM-protected files cannot be converted. Remove DRM protection first.
  • Complex layouts may not convert perfectly between fixed and reflowable formats.
  • Some proprietary features may be lost during format conversion.

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Frequently Asked Questions

Can I convert DRM-protected e-books?

No, DRM-protected files cannot be converted. This includes books purchased from Amazon, Apple, or other stores with copy protection. You need to remove DRM protection first using appropriate tools.

Which format should I choose for my Kindle?

For Kindle devices, choose MOBI for older models or AZW3 for newer Kindle Paperwhite and Oasis devices. AZW3 offers better typography and formatting support.

Will my book keep its cover image after conversion?

Yes, cover images are preserved during conversion when they exist in the source file. The cover will be embedded in the output file in the appropriate format.

What's the difference between EPUB and MOBI?

EPUB is an open standard supported by most e-readers except Kindle. MOBI is Amazon's proprietary format for Kindle devices. EPUB generally offers better formatting options and is the preferred format for non-Kindle devices.

Can I convert PDF to EPUB?

Yes, but results vary depending on the PDF. Text-based PDFs convert well, while scanned documents or image-heavy PDFs may lose formatting. For scanned PDFs, consider using OCR first.

What file size limits apply?

E-book files up to 100 MB are supported. Most e-books are well under this limit. If your file is larger, it may contain high-resolution images that could be optimized.

E-book Converter — EPUB, MOBI, FB2, AZW3, PDF