What are MOBI files and how to open them

Are you having problems opening a MOBI file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a MOBI file?

A .MOBI file is a Mobipocket format e-Book file.

Files containing the .mobi file extension most commonly contain digital ebooks saved in the Mobipocket binary eBook format.

The MOBI eBook file format supports standard HTML, and it is one of the Open eBook Publication formats for eBook distribution.

MOBI files may contain DRM copyright protection features. DRM features prevent unauthorized users from viewing or copying an eBook that is contained in the MOBI file.

The MOBI file format is commonly used for eBooks that are distributed for use on smartphones, PDAs, and the Amazon Kindle reading device or devices that support the Amazon Kindle software.

How to open MOBI files

We have identified three MOBI openers that are compatible with this specific type of MOBI file.

Programs that open Mobipocket format e-Book files

Amazon KindleAmazon KindleVerified
Mobipocket ReaderMobipocket ReaderVerified

Last updated: January 16, 2023

Various apps that use files with this extension

These apps are known to open certain types of MOBI files. Remember, different programs may use MOBI files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Icecream Ebook ReaderIcecream Ebook ReaderVerified
STDU ViewerSTDU ViewerUser submitted
E-book viewerE-book viewerUser submitted
KindleKindleUser submitted
iTunesiTunesUser submitted
Adobe Digital EditionsAdobe Digital EditionsUser submitted
Adobe AcrobatAdobe AcrobatUser submitted
FBReaderFBReaderUser submitted
Genius PDFGenius PDFUser submitted
SumatraPDFSumatraPDFUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about MOBI file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.