What is the full form of PSD ?

PSD – PhotoShop Document

The PSD is the native file format of Adobe Photoshop. Adobe Photoshop is a graphics editing program developed and published by Adobe Systems. The default extension of the photoshop documents is PSD. A PSD file stores an image with support for most imaging options available in Photoshop.

A PSD file has a maximum height and width of 30,000 pixels, and a length limit of 2 Gigabytes.These files can be exported to and from the following :-