CSH file is used by Adobe Photoshop software application. The file stores image details for a specific custom shape.

In order to add different effects to a specific image Adobe Photoshop allows the users to add pre-defined custom shapes which are also created by the users and use them without designing them from scratch. The information added in CSH file is the design and size of the shape while allows the user to use it without defining any parameter of the shape. The custom shape after applying can be altered by the user using different Photoshop tools. Generally icons are saved as CSH files.