PPMd

From Just Solve the File Format Problem
(Difference between revisions)
Jump to: navigation, search
m
(Pretty much a rewrite)
Line 1: Line 1:
 
{{FormatInfo
 
{{FormatInfo
 
|formattype=electronic
 
|formattype=electronic
|subcat=Compression
+
|subcat=Archiving
 +
|extensions={{ext|pmd}}
 +
|wikidata={{wikidata|Q3359811}}
 +
|released=1999
 
}}
 
}}
'''PPMd''' (or '''PPMD''') is a data compression scheme best suited to compression of text files.
+
'''PPMd''' is a compressed archive format developed by Dmitry Shkarin, and various compressed data formats derived from it. It uses [[Prediction by partial matching]]. It's intended to be used mainly by other software, instead of directly by end users.
  
"PPM" refers to the "[[Prediction by partial matching]]" class of compression algorithms, and the "d" is an arbitrary identifier for the specific algorithm.
+
It was originally named '''PPMD''' (PPM, escape method D), later '''PPMd''' (PPM by Dmitry).
  
 
== Related formats ==
 
== Related formats ==
* [[7z]] format supports PPMd.
+
* [[7z]] - Has a PPMd compression method.
* [[Zipx]]
+
* [[Zipx]] - Has a PPMd compression method.
 +
* [[BMF (Dmitry Shkarin)]] - Same author
  
== Links ==
+
== Software ==
* [[Wikipedia:Prediction by partial matching|Wikipedia: Prediction by partial matching]]
+
* http://compression.ru/ds/ → "PPMd" ... - Source code + Windows console binaries (web page in Russian, software in English)
 +
* [[The Unarchiver]]
 +
 
 +
[[Category:Compression]]

Revision as of 19:48, 22 July 2020

File Format
Name PPMd
Ontology
Extension(s) .pmd
Wikidata ID Q3359811
Released 1999

PPMd is a compressed archive format developed by Dmitry Shkarin, and various compressed data formats derived from it. It uses Prediction by partial matching. It's intended to be used mainly by other software, instead of directly by end users.

It was originally named PPMD (PPM, escape method D), later PPMd (PPM by Dmitry).

Related formats

Software

Personal tools
Namespaces

Variants
Actions
Navigation
Toolbox