This article describes what a KYS file is and how it works. It also explains how to open a KYS file with an Adobe program and how to edit the file to change its shortcuts.

A file with the KYS file extension is an Adobe Photoshop keyboard shortcut file. Photoshop lets you save custom keyboard shortcuts for opening menus or executing certain commands, and the KYS file is what is used to store those saved shortcuts.

For example, you can save custom shortcuts for opening images, creating new layers, saving projects, merging all layers, and much more.

KYS files are created by and can be opened with Adobe Photoshop and Adobe Illustrator. Since this is a proprietary format, you will likely not find other programs that can use these files.