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  2. Python Imaging Library - Wikipedia

    en.wikipedia.org/wiki/Python_Imaging_Library

    Python Imaging Library is a free and open-source additional library for the Python programming language that adds support for opening, manipulating, and saving many different image file formats. It is available for Windows, Mac OS X and Linux. The latest version of PIL is 1.1.7, was released in September 2009 and supports Python 1.5.2–2.7.

  3. Lossy compression - Wikipedia

    en.wikipedia.org/wiki/Lossy_compression

    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. The different versions of the photo of the cat on ...

  4. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    This is a list of file signatures, data used to identify or verify the content of a file. Such signatures are also known as magic numbersor Magic Bytes. Many file formats are not intended to be read as text. If such a file is accidentally viewed as a text file, its contents will be unintelligible. However, some file signatures can be ...

  5. JPEG XL - Wikipedia

    en.wikipedia.org/wiki/JPEG_XL

    Yes ( royalty-free [ 5]) Website. jpeg .org /jpegxl (official website) jpegxl .info (community website) JPEG XL is a royalty-free raster-graphics file format that supports both lossy and lossless compression. It is designed to outperform existing raster formats and thus become their universal replacement. [ 5]

  6. QOI (image format) - Wikipedia

    en.wikipedia.org/wiki/QOI_(image_format)

    Images are encoded row by row, left to right, top to bottom. The decoder and encoder start with {r: 0, g: 0, b: 0, a: 255} as the previous pixel value. An image is complete when all pixels specified by width * height have been covered. Pixels are encoded as: Run-length encoding of the previous pixel (QOI_OP_RUN)

  7. 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 ...

  8. Media type - Wikipedia

    en.wikipedia.org/wiki/Media_type

    In information and communications technology, a media type, [ 1][ 2] content type[ 2][ 3] or MIME type[ 1][ 4][ 5] is a two-part identifier for file formats and format contents. Their purpose is comparable to filename extensions and uniform type identifiers, in that they identify the intended data format. They are mainly used by technologies ...

  9. Digital Picture Exchange - Wikipedia

    en.wikipedia.org/wiki/Digital_Picture_Exchange

    Digital Picture Exchange (DPX) is a common file format for digital intermediate and visual effects work and is a SMPTE standard (ST 268-1:2014). The file format is most commonly used to represent the density of each colour channel of a scanned negative film in an uncompressed "logarithmic" image where the gamma of the original camera negative is preserved as taken by a film scanner.