MOBI

File Format
Name	MOBI
Ontology	Electronic File Formats Electronic Publishing formats MOBI ; ; ;
Extension(s)	.mobi, .prc
MIME Type(s)	application/x-mobipocket-ebook
PRONOM	fmt/396
Wikidata ID	Q27996279

This article is about the e-book format. For the top-level domain, see TLD .mobi.

MOBI format was originally an extension of the PalmDOC format by adding certain HTML-like tags to the data. ^{http://wiki.mobileread.com/wiki/MOBI}

The Amazon Kindle used to use this format, in a variation called AZW or AZW3, but later switched to the more standardized EPUB format.

File extensions

.mobi is the standard file extension for this format, but .prc is used instead in Palm OS, where only a limited range of extensions are supported.

This format has no connection to the .mobi top-level domain, intended for use on sites targeted at mobile devices.

ASCII "BOOKMOBI" appears at offset 60.