Kindle vs Kobo: Best eBook Formats (AZW3, EPUB, MOBI)
If you are an avid reader or self-published author, the biggest hurdle is often format compatibility. The short answer is: Kindle users should use AZW3, while Kobo and other e-readers prefer EPUB. MOBI is outdated for new devices. Use tools like BookConv or Calibre to convert your files instantly. For the head-to-head of the two formats themselves, see our EPUB vs MOBI comparison.