Turn EPUB (EPUB eBook) files into AZW3 (Kindle AZW3) — in your browser, no install, no quality loss.
Convert nowEPUB goes straight to AZW3, with no intermediate format to degrade it along the way.
The work is done by calibre.
Epub maps to azw3 in a single step. Handled by calibre.
For members, files live only in your own company drive and no other company can see them. As a guest, everything is deleted after 24 hours. Retention varies by plan and you can delete anything yourself at any time.
Yes. Drop in as many as you like — we show only the targets every file can reach, then convert them together.
No, it runs in your browser. A Windows build exists but is optional; it adds watched folders and an Explorer right-click menu.
You can try it without signing up, and free members get a set number of conversions each month. Larger files or higher volume need a paid plan.