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2. ZIP (file format) - Wikipedia

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

   ZIP is an archive file format that supports lossless data compression.A ZIP file may contain one or more files or directories that may have been compressed. The ZIP file format permits a number of compression algorithms, though DEFLATE is the most common.

3. 7-Zip - Wikipedia

   en.wikipedia.org/wiki/7-Zip

   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.

4. List of archive formats - Wikipedia

   en.wikipedia.org/wiki/List_of_archive_formats

   A compression program designed to do particularly well on very large files containing long distance redundancy. .sfark sfArk: Windows compress/decompress- Linux and macOS decompress only A compression program designed to do high compression on SF2 files . .sz application/ x-snappy-framed: Snappy: Unix-like

5. gzip - Wikipedia

   en.wikipedia.org/wiki/Gzip

   The ZIP format can hold collections of files without an external archiver, but is less compact than compressed tarballs holding the same data, because it compresses files individually and cannot take advantage of redundancy between files (solid compression). The gzip file format is also not to be confused with that of the compress utility ...

6. ALZip - Wikipedia

   en.wikipedia.org/wiki/ALZip

   For example, it may use Bzip2 to compress .txt files, while using Deflate for files with a .exe extention. For .com or .sys files, ALZip uses the ALZ algorithm. The ALZ algorithm is slower but has a high compression ratio. It has a faster compression rate than the Deflate algorithm used in the ZIP format, and is comparable to the LZMA algorithm ...

7. Express Zip - Wikipedia

   en.wikipedia.org/wiki/Express_Zip

   Express Zip File Compression Software is a file compression and archiving software program developed by NCH Software for Windows and Mac OS first released in 2010. [1] It offers the ability to open, manage, archive, extract, and compress digital documents into .zip, .tar, .tgz, .wim, .arj, and .lzh as well as additional archive formats. [2]

8. 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:

9. lzip - Wikipedia

   en.wikipedia.org/wiki/Lzip

   For example, if the underlying file is a tar archive, this can allow extracting any undamaged files, even if other parts of the archive are damaged. As for the file format, special emphasis has been put on enabling integrity checks by means of an integrated 32-bit checksum for each compressed stream; [ 3 ] this is used in combination with the ...