The File Extensions Database

.AZW3 File Extension

  • Developer by: Amazon
  • Category: eBook Files
  • Format: Binary

What is an .AZW3 file?

.AZW3 is Amazon KF8 eBook File

An AZW3 file is an eBook created in the Kindle Format 8 (KF8), Amazon's successor to the .AZW format. It supports newer features such as HTML5 and CSS3 support as well as many other formatting capabilities. AZW3 files often include DRM protection and are used as the download format for many Amazon eBooks.

KF8 eBooks can be created with KindleGen, a free command line tool provided by Amazon. AZW3 files can be previewed with Kindle Previewer, a Kindle software simulator.

NOTE: KF8 eBooks also use the .MOBI extension. The format downloaded from the Amazon store, either AZW3 or MOBI, depends on the device being used to download and read the eBook.

Programs that open Amazon KF8 eBook File
Amazon Kindle for PC
Kindle Previewer
Amazon Kindle for Mac
Kindle Previewer
PatiSoftware theLibrarian
Amazon Kindle
Amazon Kindle

How to solve problems with AZW3 files

  • Associate the AZW3 file extension with the correct application. On :
    Windows: Right click on any AZW3 file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.AZW3 files". Mac: Right click (or Ctrl-click) the AZW3 file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .AZW3 is Amazon KF8 eBook File. Because only the current version supports the latest AZW3 file format. Search, therefore, e.g. on the Amazon manufacturer website after an available .AZW3 is Amazon KF8 eBook File update.
  • To make sure that your AZW3 file is not corrupted or virus-infected, get the file again and scan it with antivirus software.