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Gzip - Just Solve the File Format Problem

Gzip

From Just Solve the File Format Problem
(Difference between revisions)
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(Specifications)
Line 36: Line 36:
 
* [https://twitter.com/angealbertini/status/534817626342436864/photo/1 Chart of format]
 
* [https://twitter.com/angealbertini/status/534817626342436864/photo/1 Chart of format]
 
* [https://stackoverflow.com/questions/20762094/how-are-zlib-gzip-and-zip-related-what-do-they-have-in-common-and-how-are-they/20765054#20765054 How are zlib, gzip and Zip related? What do they have in common and how are they different?] - Response to StackOverflow question by zlib/gzip co-creator Mark Adler
 
* [https://stackoverflow.com/questions/20762094/how-are-zlib-gzip-and-zip-related-what-do-they-have-in-common-and-how-are-they/20765054#20765054 How are zlib, gzip and Zip related? What do they have in common and how are they different?] - Response to StackOverflow question by zlib/gzip co-creator Mark Adler
 +
* [[GZSteg]] - hiding a file within a gzip

Revision as of 15:46, 9 November 2023

File Format
Name gzip
Ontology
Extension(s) .gz
MIME Type(s) application/x-gzip
PRONOM x-fmt/266
Wikidata ID Q10287816

gzip is a compressed file format and command line utility used primarily on Unix-style operating systems, but available cross-platform. It uses DEFLATE compression.

Contents

Identification

gzip files begin with two signature bytes: 0x1F 0x8B. The third byte indicates the compression method, and is normally 0x08 (meaning DEFLATE).

gzip 0.5 apparently used Freeze/Melt 1.x format, with signature bytes 0x1F 0x9E.

Specifications

Sample files

Software

See also DEFLATE#Software.

Links

Personal tools
Namespaces

Variants
Actions
Navigation
Toolbox

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