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  2. 7-Zip - Wikipedia

    en.wikipedia.org/wiki/7-Zip

    Website. www .7-zip .org. 7-Zip is a free and open-source file archiver, a utility used to place groups of files within compressed containers known as "archives". It is developed by Igor Pavlov and was first released in 1999. [ 2] 7-Zip has its own archive format called 7z, but can read and write several others.

  3. Image compression - Wikipedia

    en.wikipedia.org/wiki/Image_compression

    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 ...

  4. List of free and open-source software packages - Wikipedia

    en.wikipedia.org/wiki/List_of_free_and_open...

    Moodle – Free and open-source learning management system. OLAT – Web-based Learning Content Management System. Omeka – Content management system for online digital collections. openSIS – Web-based Student Information and School Management system. Sakai Project – Web-based learning management system.

  5. bzip2 - Wikipedia

    en.wikipedia.org/wiki/Bzip2

    bzip2 is a free and open-source file compression program that uses the Burrows–Wheeler algorithm. It only compresses single files and is not a file archiver. It relies on separate external utilities for tasks such as handling multiple files, encryption, and archive-splitting. bzip2 was initially released in 1996 by Julian Seward.

  6. AVIF - Wikipedia

    en.wikipedia.org/wiki/AVIF

    Website. aomediacodec .github .io /av1-avif /. AV1 Image File Format ( AVIF) is an open, royalty-free image file format specification for storing images or image sequences compressed with AV1 in the HEIF container format. [ 1][ 2] It competes with HEIC, which uses the same container format built upon ISOBMFF, but HEVC for compression.

  7. PeaZip - Wikipedia

    en.wikipedia.org/wiki/PeaZip

    PeaZip. PeaZip is a free and open-source file manager and file archiver [ 5] for Microsoft Windows, ReactOS, [ 6] Linux, [ 7][ 8][ 9] MacOS [ 10] and BSD [ 11][ 12] by Giorgio Tani. It supports its native PEA archive format [ 13] (supporting compression, multi-volume split, and flexible authenticated encryption and integrity check schemes) and ...

  8. 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. If the data is compressed, it may be done so using lossy compression or ...

  9. PAQ - Wikipedia

    en.wikipedia.org/wiki/PAQ

    PAQ is a series of lossless data compression archivers that have gone through collaborative development to top rankings on several benchmarks measuring compression ratio (although at the expense of speed and memory usage). Specialized versions of PAQ have won the Hutter Prize and the Calgary Challenge. [1]

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