> A file with the .MOBI file extension is used for storing eBooks. It was originally a Mobipocket Reader format but has since been adopted by several different

> A file with the .MOBI file extension is used for storing eBooks. It was originally a Mobipocket Reader format but has since been adopted by several different readers as well. Amazon purchased Mobipocket in 2005, and later discontinued the MOBI format in 2011. > The current Kindle formats (AZW3, KF8, and KFX) are based on MOBI and is a proprietary format exclusively used on Kindle devices. And, in fact, you can still open files with the MOBI format directly on your Kindle https://www.howtogeek.com/360419/what-is-a-mobi-file/ https://www.howtogeek.com/360419/what-is-a-mobi-file/ If you want to write a Kindle book, checkout my book, Publish Your eBook by Joel Dare. https://www.amazon.com/Publish-Kindle-write-ebook-software-ebook/dp/B00A4112ZM https://www.amazon.com/Publish-Kindle-write-ebook-software-e...