Why convert this way?
EPUB is the open standard most ebooks ship in, but Kindle devices expect MOBI or AZW3. Converting lets you read the same book on whatever device you actually own.
How Fyleon does it
Fyleon re-packages the ebook's text, structure, and embedded images into the target format entirely in your browser, so your library never has to be uploaded anywhere. For files under 400MB, nothing is uploaded anywhere; the file never leaves your computer. Larger files route through Fyleon's dedicated cloud pipeline, billed against your plan's own monthly quota before any one-time charge applies.
Step-by-step
- Open the Convert eBook tool and sign in (or create a free account — it takes a few seconds).
- Drop your EPUB, MOBI, AZW3, TXT, MD, HTML, RTF, or ODT file onto the upload area.
- Choose your target ebook format.
- Download the converted file directly to your device.
A note on this conversion
DRM-protected ebooks (from most commercial storefronts) can't be converted — the protection is specifically designed to prevent that. This works for DRM-free files you own or created yourself.
Files processed locally never touch Fyleon's servers, so a file with sensitive or confidential content never leaves your device.