The Kindle Fire is an amazing device for readers and shopping is as easy as on Amazon, however at times there are certain apps or books that you wish to read from places other than the Kindle ecosystem. If you own a number of eBooks from some third party bookshops, and you want to keep track of those through your Kindly library then there are ways you can get those books right on your Kindle in a matter of few minutes.


There is a process by the name of sideloading that allows you to load eBooks, apps, music, and simply anything though it. Your options can vary depending on the kind of file, however if your Kindle Fire can support it; there is a way to have it on your tablet. Here we would talk in detail about the eBooks sideloading as this is the most common kind of file used by Kindle users.

Kindle Fire File Formats

Firstly, you have to find about the file format. Kindle by default reads file having .mobi extension. If you have an ePub format book, you may still be able to read it by first converting it via a program similar to Calibre or through installation of a supporting eReader, like Kobo or Nook app. If you choose to go for a different eReader, you may lose the convenience of getting everything under one library.

Supported Kindle Fire books files formats include:

  • KF8
  • MOBI
  • AZW
  • PRC

Supported Kindle Fire Documents formats include:

  • DOC
  • DOCX
  • TXT
  • PDF

This is a key distinction where you can open PDF books however not allowed to do so under the Books tab present on Kindle. Those are present under Docs. This is the reason why the user guide for Kindle Fire is present in Docs instead of being under Books.

Transferring Files via Email        

You may email your Kindle Fire files as attachments and these files should be in any of the supported formats. These will show up in the Documents tab. For setting this up, logon to and go to

Your Account -> Manage Your Kindle -> Personal Document Settings

You will have to set the authorized email address. Normally it is like “”. Just the mails that come from approved email id would work.

Transferring Files via USB

With the help of micro-usb cable, you can transfer files to and fro from your computer to Kindle and vice versa much like an external hard disk. Place the supported books file formats in Books folder and documents file formats in Documents folder. After adding these files, you would need to restart your Kindle in order to get the books recognized by the device.

Transferring Files via DropBox

If you have Dropbox, you will need to navigate to your eBook file and instead of tapping on it, you should tap the triangle present next to the file name. Now choose export, and select save to SD card (Kindle doesn’t have an SD card but it would take you to the internal Kindle storage). Select Books for supported books file formats or Documents for supported documents file format. And lastly tap export. After this restart your device.