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  2. JPEG - Wikipedia

    en.wikipedia.org/wiki/JPEG

    JPEG. JPEG ( / ˈdʒeɪpɛɡ / JAY-peg, short for Joint Photographic Experts Group) [2] is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality.

  3. Image compression - Wikipedia

    en.wikipedia.org/wiki/Image_compression

    Image compression is a type of data compression applied to digital images, to reduce their cost for storage or transmission. Algorithms may take advantage of visual perception and the statistical properties of image data to provide superior results compared with generic data compression methods which are used for other digital data.

  4. JPEGmini - Wikipedia

    en.wikipedia.org/wiki/JPEGmini

    With the use of this technique, JPEGmini Pro may reduce JPEG picture quality by up to 80%, or 5 times, while minimizing visual imperfections in digital photos. Features. Image optimization: JPEGmini can significantly reduce the file size of JPEG images by up to 80% without compromising image quality. JPEGmini optimizes high-res photos, with a ...

  5. Lossy compression - Wikipedia

    en.wikipedia.org/wiki/Lossy_compression

    High-compression (low quality) JPEG. In information technology, lossy compression or irreversible compression is the class of data compression methods that uses inexact approximations and partial data discarding to represent the content. These techniques are used to reduce data size for storing, handling, and transmitting content.

  6. Wikipedia talk:Preparing images for upload - Wikipedia

    en.wikipedia.org/wiki/Wikipedia_talk:Preparing...

    For very small images (under 50x50 or so), png is probably best for any circumstance, since it preserves good clarity at small sizes. (not lossy) Reduce the number of colors for png. If the image only has black and white or very few colors in it, you can probably cut it down to 8-bit or lower color depth.

  7. Image file format - Wikipedia

    en.wikipedia.org/wiki/Image_file_format

    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.

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