The Graphics Interchange Format (GIF) is a bitmap image that was introduced by CompuServe on the World Wide Web due to its wide support and portability.
jpeg - Joint photographic experts group
JPG is a file extension. JPEG stands for Joint Photographic Experts group. It is regulated by ISO. JPEG is the most common file format which used in cameras or other photographic devices.
psd - photoshop document
A PSD file, also known as Photoshop document is a layered image which is used in Adobe Photoshop.
raw
Raw file format contains processed data from data from the image sensor of a digital camera, image scanner or motion picture film scanner.
tiff - tagged image file format
TIFF stands for Tagged Image File Format and is a standard in the printing and publishing industry. TIFF files are significantly larger than their JPEG counterparts, and can be either uncompressed or compressed using lossless compression.