CHM

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== Format description ==
 
== Format description ==
 
 
* [http://chmspec.nongnu.org/latest/ chmspec]
 
* [http://chmspec.nongnu.org/latest/ chmspec]
  
 
== Software ==
 
== Software ==
 
 
* [https://savannah.nongnu.org/projects/chmdeco chmdeco]
 
* [https://savannah.nongnu.org/projects/chmdeco chmdeco]
 
* [http://portableapps.com/apps/office/kchmviewer-portable KchmViewer]
 
* [http://portableapps.com/apps/office/kchmviewer-portable KchmViewer]
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* [http://www.russotto.net/chm/ CHM Tools]
 
* [http://www.russotto.net/chm/ CHM Tools]
 
* [[7-Zip]]
 
* [[7-Zip]]
 +
* [https://github.com/dottedmag/archmage archmage]
 +
 +
== Sample files ==
 +
* https://telparia.com/fileFormatSamples/document/chm/
  
 
== Links and references ==
 
== Links and references ==
 
 
* [https://en.wikipedia.org/wiki/Microsoft_Compiled_HTML_Help Wikipedia article]
 
* [https://en.wikipedia.org/wiki/Microsoft_Compiled_HTML_Help Wikipedia article]
 
* [http://www.infoworld.com/article/2894256/security/ancient-help-file-format-carrying-new-cryptowall-attacks-on-pcs.html Ancient help-file format carries new CryptoWall attacks into PCs]
 
* [http://www.infoworld.com/article/2894256/security/ancient-help-file-format-carrying-new-cryptowall-attacks-on-pcs.html Ancient help-file format carries new CryptoWall attacks into PCs]
  
 
== See also ==
 
== See also ==
 
 
* [[Microsoft Help 2]]
 
* [[Microsoft Help 2]]
 
* [[HLP (WinHelp)]]
 
* [[HLP (WinHelp)]]
 
  
 
[[Category:Microsoft]]
 
[[Category:Microsoft]]
 
[[Category:Windows]]
 
[[Category:Windows]]
 
[[Category:Hypermedia]]
 
[[Category:Hypermedia]]

Revision as of 02:15, 3 August 2021

File Format
Name CHM
Ontology
Extension(s) .chm
MIME Type(s) application/vnd.ms-htmlhelp
PRONOM fmt/634
Released 1997

CHM (Compiled HTML Help), AKA Microsoft Help 1, is a Microsoft format for help files. While it is proprietary, it has been reverse engineered, and many software applications can read it.

It is a compressed binary file format, including content in HTML as well as other related data.

Microsoft Help 2 was intended as a successor, but never saw much use.

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Format description

Software

Sample files

Links and references

See also

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