ZPAQ
From Just Solve the File Format Problem
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(Created page with "{{FormatInfo |formattype=electronic |subcat=Archiving |extensions={{ext|zpaq}}, {{ext|cfg}} |released=2009 }} '''ZPAQ''' (or '''zpaq''') is a compressed archive format, and as...") |
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|subcat=Archiving | |subcat=Archiving | ||
|extensions={{ext|zpaq}}, {{ext|cfg}} | |extensions={{ext|zpaq}}, {{ext|cfg}} | ||
| + | |pronom={{PRONOM|fmt/1097}} | ||
|released=2009 | |released=2009 | ||
}} | }} | ||
| − | '''ZPAQ''' (or '''zpaq''') is a compressed archive format, and associated software. | + | '''ZPAQ''' (or '''zpaq''') is a compressed archive format, and associated software. It is a member of the [[PAQ]] family of formats. |
Apparently, a capitalized '''ZPAQ''' usually refers to the format, while '''zpaq''' refers to the software. | Apparently, a capitalized '''ZPAQ''' usually refers to the format, while '''zpaq''' refers to the software. | ||
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== Specifications == | == Specifications == | ||
| − | * [http://mattmahoney.net/dc/zpaq206.pdf The ZPAQ Open Standard Format, | + | * [http://mattmahoney.net/dc/zpaq206.pdf The ZPAQ Open Standard Format, Version 2.06] |
* [http://mattmahoney.net/dc/zpaq_compression.pdf The ZPAQ Compression Algorithm] | * [http://mattmahoney.net/dc/zpaq_compression.pdf The ZPAQ Compression Algorithm] | ||
| Line 22: | Line 23: | ||
* [http://mattmahoney.net/dc/zpaq.html ZPAQ website] → [http://mattmahoney.net/dc/calgarytest2.zpaq test case (calgarytest2.zpaq)] | * [http://mattmahoney.net/dc/zpaq.html ZPAQ website] → [http://mattmahoney.net/dc/calgarytest2.zpaq test case (calgarytest2.zpaq)] | ||
* [http://mattmahoney.net/dc/zpaqutil.html ZPAQ Utilities] → [http://mattmahoney.net/dc/pi10k.zpaq pi10k.zpaq] | * [http://mattmahoney.net/dc/zpaqutil.html ZPAQ Utilities] → [http://mattmahoney.net/dc/pi10k.zpaq pi10k.zpaq] | ||
| + | * {{DexvertSamples|archive/zpaq}} | ||
== Links == | == Links == | ||
* [http://mattmahoney.net/dc/zpaq.html ZPAQ website] | * [http://mattmahoney.net/dc/zpaq.html ZPAQ website] | ||
* [[Wikipedia:ZPAQ|Wikipedia article]] | * [[Wikipedia:ZPAQ|Wikipedia article]] | ||
| + | |||
| + | [[Category:Compression research]] | ||
Latest revision as of 02:55, 28 December 2023
ZPAQ (or zpaq) is a compressed archive format, and associated software. It is a member of the PAQ family of formats.
Apparently, a capitalized ZPAQ usually refers to the format, while zpaq refers to the software.
Contents |
[edit] ZPAQL
To the best of our understanding, ZPAQ decompression algorithms are written in a special programming language called ZPAQL (which apparently uses the .cfg file extension), compiled to bytecode, and stored in each ZPAQ archive. This allows ZPAQ to use practically any compression algorithm.
[edit] Identification
Most or all ZPAQ archives begin with ASCII "zPQ", or "7kSt".
[edit] Specifications
[edit] Sample files
- ZPAQ website → test case (calgarytest2.zpaq)
- ZPAQ Utilities → pi10k.zpaq
- dexvert samples — archive/zpaq
