FILE FORMAT GUIDE
What is a MOBI file?
An older e-book format used by legacy Kindle workflows. Use this guide to decide whether to keep MOBI or convert it for a different workflow.
PRACTICAL OVERVIEW
Where MOBI works well
MOBI is a strong choice for compatibility with older reading devices.
The right output depends on what must remain editable, how the file will be shared, and which application or device needs to open it.
FORMAT QUESTIONS
About MOBI files
What is MOBI best used for?
MOBI works especially well for compatibility with older reading devices.
What can change during conversion?
Modern readers generally prefer EPUB or AZW3. Features that do not exist in the chosen output format cannot be carried across exactly.
Should I keep the original MOBI file?
Yes. Keep the original until you have opened the result and checked its layout, quality, data, media tracks, or other important details.