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Sometimes, you find a drawing or similar image useful for a Wikipedia article, that was saved as a JPEG but should have been saved as a PNG.JPEG is good for images where the color changes fluidly throughout the image, like in a photograph, whereas PNG files are good for images with relatively few colors, such as a drawing of a flag, a chart, or a map; note that sometimes SVG is better.
Original file (SVG file, nominally 909 × 223 pixels, file size: 32 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
The PNG file format supports 8-bit (256 colors) paletted images (with optional transparency for all palette colors) and 24-bit truecolor (16 million colors) or 48-bit truecolor with and without alpha channel – while GIF supports only 8-bit palettes with a single transparent color. Compared to JPEG, PNG excels when the image has large ...
Original file (SVG file, nominally 800 × 148 pixels, file size: 2 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
When converting an image from the PNG format to GIF, the image quality may suffer due to posterization if the PNG image has more than 256 colors. GIF intrinsically supports animated images. PNG supports animation only via unofficial extensions (see the section on animation, above). PNG images are less widely supported by older browsers.
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Original file (SVG file, nominally 512 × 512 pixels, file size: 618 bytes) This is a file from the Wikimedia Commons . Information from its description page there is shown below.