.apmaster is Apple Photos data

Key Features: .APMASTER File Extension

Features Description
File Extension .apmaster
Format N/A
Created by Apple
Category Various data

What's on this Page

  1. How to open:
  2. How to convert:

What is an .APMASTER file?

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.


Various data


How to solve problems with APMASTER files