The File Extensions Database

.LUCI File Extension

  • Developer by:, Inc.
  • Category: E-book Files

What is an .LUCI file?

.LUCI is Amazon Kindle Fire mobi ebook container

The luci file extension appears to be mainly associated with the Amazon Kindle Fire, an e-book reading smart device with customized Google Android operating system.

The luci file is data container (simply folder) that stores e-books in mobi format.

Typically located in:


How to open:

You can use any file manager to view content of .luci container.

How to convert:

You cannot convert *.luci file (folder actually) to anything else, only the content.

How to solve problems with LUCI files

  • Associate the LUCI file extension with the correct application. On :
    Windows: Right click on any LUCI file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.LUCI files". Mac: Right click (or Ctrl-click) the LUCI 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 .LUCI is Amazon Kindle Fire mobi ebook container. Because only the current version supports the latest LUCI file format. Search, therefore, e.g. on the, Inc. manufacturer website after an available .LUCI is Amazon Kindle Fire mobi ebook container update.
  • To make sure that your LUCI file is not corrupted or virus-infected, get the file again and scan it with antivirus software.