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  2. Zamzar - Wikipedia

    en.wikipedia.org/wiki/Zamzar

    The service supports the conversion of documents, images, audio, video, e-Books, CAD files and compressed file formats. [ 6 ] [ 7 ] Users can type in a URL or upload one or more files (if they are all of the same format) from their computer; Zamzar will then convert the file(s) to another user-specified format, such as an Adobe PDF file to a ...

  3. ZIP (file format) - Wikipedia

    en.wikipedia.org/wiki/ZIP_(file_format)

    The original .ZIP format had a 4 GB (2 32 bytes) limit on various things (uncompressed size of a file, compressed size of a file, and total size of the archive), as well as a limit of 65,535 (2 16-1) entries in a ZIP archive.

  4. List of archive formats - Wikipedia

    en.wikipedia.org/wiki/List_of_archive_formats

    This means that compressed archives with the UC2 file extension can hold almost 1 million files. .uca PerfectCompress [17] Windows: Windows: No Based on PAQ, RZM, CSC, CCM, and 7zip. The format consists of a PAQ, RZM, CSC, or CCM compressed file and a manifest with compression settings stored in a 7z archive. .uha UHarc DOS/Windows: DOS/Windows ...

  5. 7z - Wikipedia

    en.wikipedia.org/wiki/7z

    Open, modular architecture that allows any compression, conversion, or encryption method to be stacked. High compression ratios (depending on the compression method used). AES-256 bit encryption. Zip 2.0 (Legacy) Encryption; Large file support (up to approximately 16 exbibytes, or 2 64 bytes). Unicode file names.

  6. Data compression ratio - Wikipedia

    en.wikipedia.org/wiki/Data_compression_ratio

    Thus, a representation that compresses the storage size of a file from 10 MB to 2 MB yields a space saving of 1 - 2/10 = 0.8, often notated as a percentage, 80%. For signals of indefinite size, such as streaming audio and video, the compression ratio is defined in terms of uncompressed and compressed data rates instead of data sizes:

  7. PeaZip - Wikipedia

    en.wikipedia.org/wiki/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 other ...