Scalable Vector Graphics (SVG) are XML based vector image format for 2d graphics that support interactivity and animation. SVG images and the behaviour of them are defined in XML text files. SVG files can be edited with any text editor as essentially they are just XML files. All modern web browsers support SVG files and can render their markup.
SVG is used to define vector-based graphics for the Web and defines the graphics in XML format. These files do not lose quality when they are zoomed or resized. Every element and attribute within the SVG file can be animated. SVG files come with a W3C recommendation and integrates with other W3C standards such as the DOM and XSL.
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PNG pronounced ping is a format for storing bitmapped (raster) images on computers. It was created originally to replace the GIF file format when it was announced that the companies who created the GIF format wanted royalties. PNG uses indexed colors and lossless compression (like a .GIF file), but without those copyright limitations; it cannot be animated like a GIF image.
PNG images are in many ways better than .GIF as they also include an 8-bit transparency channel, which allows the colors in the image to fade from opaque to transparent; GIF images only support fully opaque or fully transparent pixels. PNG supports palettes of 24-bit RGB colors, RGB images or greyscale or RGB images. PNG was intended to be able to transfer images on the Internet, not professional graphics, and so does not support other colour spaces (such as CMYK).
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