Edit graphics and create incredible images with Photoshop Document (PSD) files — the native file format of Adobe Photoshop.
PSD stands for Photoshop Document. It's the default format used by the popular graphics editor Adobe Photoshop to save images you create. Photoshop does allow you to save files in other formats, but if you create a file from scratch, it will generally default to the PSD format unless you choose otherwise.