If you do not want the hassle of an extra file for each of your raw files you can save them in the. In Photoshop, the XMP file is automatically generated when you open a camera raw file, choose the settings in the intermediary camera raw processing screen, and click OK. While XMP data is supported by several third-party applications, it is primarily used by Adobe software to store metadata for camera raw files. The format was developed by Adobe as a means to standardize metadata across multiple file types, such as images, databases, and web documents.
XMP (Extensible Metadata Platform) files are saved in a standard plain text format that can be searched by XMP-compatible applications.
