Convert between EPUB, MOBI, AZW3, FB2, PDF and more. EPUB is the open standard supported by most readers; convert older MOBI files to EPUB for modern e-readers, or to PDF for fixed-layout printing.
Supported ebook formats
AZW
lossless · Kindle devices
CBR
CBZ
lossless · publishing to Apple Books, Kobo, Google Play and most e-readers
FB2
HTMLZ
LIT
lossless · older Kindle files; converted to EPUB for modern readers
OEB
PDB
Popular ebook conversions
Frequently asked questions
What is the best ebook format?
EPUB is the open standard supported by Apple Books, Kobo, Google Play and most e-readers. Amazon now accepts EPUB too and converts it internally, so EPUB is the safest choice for distribution.
Is MOBI still supported?
Amazon discontinued MOBI in 2022 in favour of EPUB. Convert older MOBI files to EPUB for modern readers, or to PDF if you need a fixed, printable layout.
Can I convert an ebook to PDF?
Yes. Converting EPUB or MOBI to PDF produces a fixed-layout file ideal for printing or reading on any device, though it loses the reflowable text that adjusts to screen size.
Last updated July 2026