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Original file (SVG file, nominally 1,000 × 378 pixels, file size: 5 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
This is a Scalable Vector Graphics (SVG) image of a registered trademark or copyrighted logo. If non-free content restrictions apply, this image should not be rendered any larger than is required for the purposes of identification and/or critical commentary.
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GIF: Graphics Interchange Format CompuServe, Unisys ... None, RLE, JPEG, and PNG Raster 16 bpc Yes Yes No No No No No Yes No No No BPG: HEVC, Lossy and lossless
Original file (489 × 640 pixels, file size: 118 KB, MIME type: image/jpeg) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
The JPEG filename extension is JPG or JPEG. Nearly every digital camera can save images in the JPEG format, which supports eight-bit grayscale images and 24-bit color images (eight bits each for red, green, and blue). JPEG applies lossy compression to images, which can result in a significant reduction of the file size.
Existing JPEG files can be compressed a bit more, with no additional loss in quality, using jpegtran -optimize. This results in a smaller file, but the compression is slower. Jpegtran is part of libjpeg. A package called littleutils contains a script called opt-jpg that automates JPEG optimization, using jpegtran as the underlying engine.
WebP is a raster graphics file format developed by Google intended as a replacement for JPEG, PNG, and GIF file formats. It supports both lossy and lossless compression, [8] as well as animation and alpha transparency.