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What are APNX files and how to open them

Are you having problems opening an APNX file or are you simply curious about its contents? We're here to explain the properties of these files and provide you with software that can open or handle your APNX files.

What is an APNX file?

An .APNX file is an Amazon Kindle Page Number index file.

The .apnx or the Amazon Page Number Index file extension is an e-book file type that Amazon Kindle normally utilizes. APNX files are pagination files used by Kindle devices, and they are firstly introduced in the 3.1 firmware version. APNX files are files specifically created to mark the pages of Kindle e-books.

APNX files can be found in maps page numbers of the digital book to the original print book's page numbers. APNX enables readers to see the page numbers of the e-book. It is saved on the devices and can only be opened if an e-book is already downloaded. While there is no e-book to support it, the .apnx file is dormant and cannot be opened or edited by any means aside from opening it via Kindle e-books.

How to open APNX files

We have identified two APNX openers that are compatible with this specific type of APNX file.

Programs that open Amazon Kindle Page Number index files

Amazon KindleAmazon KindleVerified

Last updated: September 21, 2023

Various apps that use files with this extension

These apps are known to open certain types of APNX files. Remember, different programs may use APNX files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Kobo Desktop EditionKobo Desktop EditionUser submitted

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File.org helps thousands of users every day, and we would love to hear from you if you have additional information about APNX file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.