Adobe Photoshop images are identified by which file extension?

Adobe Photoshop images are specifically identified by the .PSD file extension. This format stands for "Photoshop Document," and it is designed to preserve all the capabilities of the software, including layers, masks, color profiles, and transparency. When you save an image as a .PSD file, you are able to retain all the editing information, allowing for further adjustments and modifications later on, which is a significant advantage for graphic designers and photographers who require flexibility in their workflow.

Other file extensions like .JPEG, .PNG, and .TIFF are commonly used for images but serve different purposes. For example, .JPEG is typically used for compressed images to reduce file size, which results in loss of some image quality. .PNG supports transparency and is often used for web graphics, while .TIFF is known for high-quality images that maintain layers but is not as commonly associated with the Photoshop program as .PSD is. Hence, the .PSD extension specifically denotes files that contain all of the advantageous features of Adobe Photoshop.