.ADO File Extension
File TypeAdobe Photoshop Duotone Options File
This file is saved in a binary format, which requires a specific program to read its contents.
What is an ADO file?
Settings file used by Adobe Photoshop, a graphics editing program; stores color transfer curves, which specify the properties of two colors that are used to generate a duotone image from a grayscale format in Photoshop; used for saving and loading duotone ink settings that can be applied to multiple images.
The Duotone Options dialog box can be accessed by selectingin Photoshop. ADO files can be loaded and saved using this window.