Microsoft Compiled HTML Help is a Microsoft proprietary online help format, consisting of a collection of HTML pages, an index and other navigation tools. The files are compressed and deployed in a binary format with the extension .CHM, for Compiled HTML. The format is often used for software documentation .
4-702: It was introduced as the successor to Microsoft WinHelp with the release of Windows 95 OSR 2.5 and consequently, Windows 98 . Within the Windows NT family, the CHM file support is introduced in Windows NT 4.0 and is still supported in Windows 11 . Although the format was designed by Microsoft, it has been successfully reverse-engineered and is now supported in many document viewer applications. Microsoft has announced that they do not intend to add any new features to HTML Help. Help
8-519: A HTML Help project. The file name of such a project has the extension .HHP and the file is just a text with the INI file format. The Free Pascal project has a compiler (chmcmd) that can create CHM files in a multiplatform way. Read support: Read/write support: Microsoft WinHelp Too Many Requests If you report this error to the Wikimedia System Administrators, please include
12-480: Is delivered as a binary file with the .chm extension. It contains a set of HTML files, a hyperlinked table of contents, and an index file. The file format has been reverse-engineered and documentation of it is freely available. The file starts with bytes "ITSF" (in ASCII ), for "Info-Tech Storage Format", which is the internal name given by Microsoft to the generic storage file format used for CHM files. CHM files support
16-581: The following features: The Microsoft Reader 's .lit file format is a modification of the HTML Help CHM format. CHM files are sometimes used for e-books. Sumatra PDF supports viewing CHM documents since version 1.9. Various applications, such as HTML Help Workshop and 7-Zip can decompile CHM files. The hh.exe utility on Windows and the extract_chmLib utility (a component of chmlib) on Linux can also decompile CHM files. Microsoft's HTML Help Workshop and Compiler generate CHM files by instructions stored in
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