FILE FORMAT GUIDE
What is a EPUB file?
A reflowable e-book format supported by most reading apps. Use this guide to decide whether to keep EPUB or convert it for a different workflow.
PRACTICAL OVERVIEW
Where EPUB works well
EPUB is a strong choice for books that adapt to screen and font size.
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 EPUB files
What is EPUB best used for?
EPUB works especially well for books that adapt to screen and font size.
What can change during conversion?
Fixed layouts and complex typography may change during conversion. Features that do not exist in the chosen output format cannot be carried across exactly.
Should I keep the original EPUB file?
Yes. Keep the original until you have opened the result and checked its layout, quality, data, media tracks, or other important details.