graphic formats

 A PNG is an acronym or abbreviation that stands for portable networks graphics format. This was made because when GIF was made where you have to pay for them they needed something else. They made PNG to replace it. A bunch of people got together to make it. PNG has better compression and can support millions of colors.

Source:http://info.eps.surrey.ac.uk/FAQ/standards.html
 and  http://www.internetslang.com/PNG-meaning-definition.asp


 A GIF is an abbreviation that stands for Graphics Interchange Format. GIF was made in 1987 because compuserve needed a platform independent image format that was able to transfer across slow conections. There are two types of GIFs 87a and 89a. One was made in 1987 and the other 1998.89a has other features and has improved interlacing.

source: http://info.eps.surrey.ac.uk/FAQ/standards.html

A JPEG is and abbreviation that stands for joint Photographic expert group. It is a standardised image compression mechanism. It is designed for compressing full color or gray-scale digital images of natural scenes.

source:http://info.eps.surrey.ac.uk/FAQ/standards.html


A TIFF is a abbreviation that stands for tagged image file format.TIFF is used for images that come from optical scanners, graphics and photo editing applications. The files can span multiple pages.

source:http://www.tiffviewer.com/tiff-file-format.htm