File Extension Library


.APMASTER File Extension

  • Developer by: Apple, Inc.
  • Category: Various data Files

What are .APMASTER files and how to open them?

Can't open .APMASTER file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .APMASTER file.

What is a .APMASTER file extension?

.APMASTER file extension is created by Apple, Inc.. .APMASTER has been classified as Various data Files.

.APMASTER is Apple Photos data

The apmaster file extension is associated with the Apple Photos and Apple iPhoto software included in OS X that allow users to manage and edit digital photos.

The apmaster file stores some kind of data used by Photos and iPhoto.


How to open:

The apmaster files are used for internal purposes of Apple Photos programs.

How to convert:

Conversion to other formats is not possible.

How to fix problems with .APMASTER files

  1. You need to update the application that you normally use to open .APMASTER files. Only the latest version of the software supports the current .APMASTER file format
  2. You need to check the .APMASTER file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)