what's a psd file
What is a PSD file? The .psd file extension is given to files that have been created by the Adobe Photoshop computer application. The Adobe Photoshop application is a professional image-editing program that can create a variety of image elements such as layers and masks. When these files are created, they are saved with the .psd file extension.
Photoshop files have default file extension as .PSD, which stands for Photoshop Document.. A PSD file stores an image with support for most imaging options available in Photoshop. These include layers with masks, transparency, text, alpha channels and spot colors, clipping paths, and duotone settings.