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  2. pngcrush - Wikipedia

    en.wikipedia.org/wiki/Pngcrush

    pngcrush can be used to change the color encoding of an image. For example, if an image contains 10 colors but has a color palette of 256 entries (8-bit), pngcrush can be used to reduce the color palette to a 4-bit one and truncate the palette to 10 entries. pngcrush can also change the color type of the image.

  3. ImageMagick - Wikipedia

    en.wikipedia.org/wiki/ImageMagick

    Format conversion: convert an image from one format to another (e.g. PNG to JPEG). Transform: resize, rotate, crop, flip or trim an image. (Applies these without generation loss on JPEG files, where possible.) Transparency: render portions of an image invisible. Draw: add shapes or text to an image. Decorate: add a border or frame to an image.

  4. Help : How to reduce colors for saving a JPEG as PNG

    en.wikipedia.org/wiki/Help:How_to_reduce_colors...

    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.

  5. JPEG Network Graphics - Wikipedia

    en.wikipedia.org/wiki/JPEG_Network_Graphics

    JPEG Network Graphics (JNG, / ˈ dʒ ɪ ŋ /) is a JPEG-based graphics file format which is closely related to PNG: it uses the PNG file structure (with a different signature) as a container format to wrap JPEG-encoded image data. JNG was created as an adjunct to the MNG animation format, but may be used as a stand-alone format. JNG files embed ...

  6. 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.

  7. Image conversion - Wikipedia

    en.wikipedia.org/wiki/Image_conversion

    Like any resampling operation, changing image size and bit depth are lossy in all cases of downsampling, such as 30-bit to 24-bit or 24-bit to 8-bit palette-based images.. While increasing bit depth is usually lossless, increasing image size can introduce aliasing or other undesired artifa

  8. Windows Photo Viewer - Wikipedia

    en.wikipedia.org/wiki/Windows_Photo_Viewer

    [3] [4] [5] Windows Photo Viewer supports images in BMP, JPEG, JPEG XR (formerly HD Photo), PNG, ICO, GIF and TIFF file formats. [6] Windows Photo Viewer is deprecated in Windows 10 and later in favor of a Universal Windows Platform app called Photos. The program can no longer be accessed by normal means, however it can be re-enabled by editing ...

  9. Windows Imaging Component - Wikipedia

    en.wikipedia.org/wiki/Windows_Imaging_Component

    By default, Windows Vista ships with JPEG, TIFF, GIF, PNG, BMP and HD Photo encoders and decoders, and an ICO decoder. Additionally, as of 2009, some camera manufacturers [2] and 3rd-parties [3] [4] have released WIC codecs for proprietary raw image formats, enabling Mac-like raw image support to Windows 7 and Vista. [5]