VML and PGML are more similar than they are different, but, in general, VML supports the constructs necessary for office graphics, while PGML was proposed to support richer graphics more suited to the professional design and publishing community. As a result of these and other proposals, the W3C assembled the SVG Working Group. A. Raster or bitmap formats such as GIF and JPEG have to include every pixel needed to display a graphic. As a result, GIF and JPEG files tend to be bulky, limited to a single, often low, resolution, and consume large amounts of bandwidth on the Web. Users can magnify their view of an image without sacrificing sharpness, detail, or clarity.
Text stays text.
Text in SVG images remains editable and searchable. There are no font limitations and users will always see the image the same way you do. Small file size. SVG files are, on average, smaller than other Web-graphic formats such as JPEG and GIF and are quick to download. Superior color control.