Format guide
EPUB: open standard, used by Kobo, Apple Books, Google Play Books. MOBI/AZW3: Kindle only. PDF: universal but non-reflowable.
PDF and document tool
EPUB/MOBI/PDF Ebook Converter
Convert ebooks between EPUB, MOBI, PDF, and other formats. Make your ebooks compatible with Kindle, Kobo, Apple Books, and other readers.
Complete guide
How to use EPUB/MOBI/PDF Ebook Converter
PDF tools guide for epub/mobi/pdf ebook converter users.
Different e-readers use different formats: Kindle uses MOBI/AZW3, Kobo and Apple Books use EPUB, and PDFs are universally readable but lose reflowability. Converting between formats ensures your ebook is compatible with your device.
EPUB is the open standard - use it when the target device supports it. MOBI is Kindle-specific. PDF preserves exact layout but doesn't reflow for small screens.
What this tool does
Converts ebook files between EPUB, MOBI, PDF, and other formats using server-side processing.
DRM note
DRM-protected books (purchased from Amazon, Apple, etc.) cannot be converted. This tool only works with DRM-free ebooks.
Quick checklist
- DRM-protected books cannot be converted - only DRM-free ebooks work.
- For Kindle: target MOBI or AZW3.
- For Kobo, Apple Books: target EPUB.
- PDF conversion loses reflowability - text won't resize for small screens.
Answers
EPUB/MOBI/PDF Ebook Converter FAQs
Can I convert a Kindle book to EPUB?
Only if the book is DRM-free. Amazon-purchased Kindle books are DRM-protected and cannot be converted by any tool without removing the DRM first, which may violate terms of service.
What is the best format for e-readers?
EPUB for most devices (Kobo, Apple Books, Nook). MOBI for older Kindles. AZW3 for modern Kindles.
Does PDF work well on e-readers?
Only on large-screen e-readers (10"+). On smaller screens, PDF text is too small to read without zooming - reflowable formats like EPUB are much better.
Are my ebook files uploaded to a server?
Yes - ebook conversion requires server-side processing. Files are deleted within 60 minutes.