What Are The Characteristics of The Following Graphics File Formats: GIF, PNG, JPEG, XCF, PSD, SVG.

DEFINITION:
GIF: The Graphics Interchange Format (GIF) is an 8-bit-per-pixel bitmap image format that was introduced by CompuServe in 1987 and has since come into widespread usage on the World Wide Web due to its wide support and portability.

The format uses a palette of up to 256 distinct colors from the 24-bit RGB color space. It also supports animations and allows a separate palette of 256 colors for each frame. The color limitation makes the GIF format unsuitable for reproducing color photographs and other images with continuous color, but it is well-suited for more simple images such as graphics or logos with solid areas of color.
LINK: http://en.wikipedia.org/wiki/Gif

PNG: Portable Network Graphics (PNG) is a bitmapped image format that employs lossless data compression. PNG was created to improve upon and replace the GIF format, as an image-file format not requiring a patent license. PNG is pronounced "ping".

PNG supports palette-based (palettes of 24-bit RGB colors) or greyscale or RGB images. PNG was designed for transferring images on the Internet, not professional graphics, and so does not support other color spaces (such as CMYK).
LINK: http://en.wikipedia.org/wiki/Png

JPEG: In computing, JPEG (pronounced JAY-peg) is a commonly used method of compression for photographic images. The name JPEG stands for Joint Photographic Experts Group, the name of the committee that created the standard. The group was organized in 1986, issuing a standard in 1992 which was approved in 1994 as ISO 10918-1. JPEG is distinct from MPEG (Moving Picture Experts Group) which produces compression schemes for video.
LINK: http://en.wikipedia.org/wiki/Jpeg

XCF: XCF, short for Experimental Computing Facility, is the native image format of the GIMP image-editing program. It supports saving each layer, the current selection, channels, transparency, paths and guides. However, unlike a PSD file, the undo history is not saved in an XCF file.
LINK: http://en.wikipedia.org/wiki/XCF_%28file_format%29

PSD: The .PSD (Photoshop Document) format stores an image with support for most imaging options available in Photoshop. These include layers with masks, color spaces, ICC profiles, transparency, text, alpha channels and spot colors, Clipping paths, and duotone settings. This is in contrast to many other file formats that restrict content to provide streamlined, predictable functionality. Photoshop's popularity means that the .PSD format is widely used, and it is supported to some extent by most competing software.
LINK: http://en.wikipedia.org/wiki/Adobe_Photoshop#Features

SVG: Scalable Vector Graphics (SVG) is an XML specification and file format for describing two-dimensional vector graphics, both static and animated. SVG can be purely declarative or may include scripting. Images can contain hyperlinks using outbound simple XLinks. It is an open standard created by the World Wide Web Consortium's SVG Working Group.
LINK: http://en.wikipedia.org/wiki/Svg