Graphic Formats

tiff: A format used for scanning, storage and interchange graphic images.  Stands for Tagged Image File Format.
example:
Note: .tiff images are hard to find so for now there will not be one but here's a failed attempt at an image converted to the .tiff format:

gif: Images that are compressed to reduce the transfer time.  Short for Graphic Interchange Format.
example:

jpg/jpeg: A format for compressing image files.  Short for Joint Photographic Experts Groups.
example:
 
png: A bit map graphic format similar to the gif format.  Short for Portable Network Graphics.
example: