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  2. Free Lossless Image Format - Wikipedia

    en.wikipedia.org/wiki/Free_Lossless_Image_Format

    The format supports an optional alpha channel like PNG (but unlike JPEG); and progressive coding, similar to PNG (unlike it, progressive compression doesn't increase file-size), but as FLIF's algorithm is more complex (and partly, may not have had as much tuning of the implementation yet), it has a higher computational cost; at least lower ...

  3. 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.

  4. PNG - Wikipedia

    en.wikipedia.org/wiki/PNG

    The JPEG (Joint Photographic Experts Group) format can produce a smaller file than PNG for photographic (and photo-like) images, since JPEG uses a lossy encoding method specifically designed for photographic image data, which is typically dominated by soft, low-contrast transitions, and an amount of noise or similar irregular structures.

  5. Image file format - Wikipedia

    en.wikipedia.org/wiki/Image_file_format

    An image file format is a file format for a digital image. There are many formats that can be used, such as JPEG, PNG, and GIF. Most formats up until 2022 were for storing 2D images, not 3D ones. The data stored in an image file format may be compressed or uncompressed.

  6. List of open file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_open_file_formats

    OpenEXR – a high dynamic range imaging image file format, released as an open standard along with a set of software tools created by Industrial Light and Magic (ILM). OpenRaster – a format for raster graphics editors that saves layers; PNG – a raster image format standardized by ISO/IEC; QOI – a simple, fast and lossless open source ...

  7. Netpbm - Wikipedia

    en.wikipedia.org/wiki/Netpbm

    Filesize reduction factor 100 or so when converting to png is typical if the image is a line drawing; if the image is a photo, it is best converted to jpeg, which yields a greater filesize reduction. The PPM format is generally an intermediate format used for image work before converting to a more efficient format, for example the PNG format ...

  8. Lossless JPEG - Wikipedia

    en.wikipedia.org/wiki/Lossless_JPEG

    IrfanView image viewer and editor has full read+write support for JPEG LS image codec (.jls file extension). XnView image viewer and editor claims the capability to read JPEG LS (.jls) files. However, XnViewMP v0.98.1 can not read JPEG LS files created by IrfanView v4.54. CharLS - an open-source JPEG LS codec. Thomas Richter's libjpeg - an open ...

  9. Comparison of image viewers - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_image_viewers

    This enables reading and writing to a variety of formats, including JPEG, JPEG 2000, Apple Icon Image format, TIFF, PNG, PDF, BMP and more. SView5 may also run on Linux/x86 and MacOS/x86 using Mono .

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