Online CHM Converter

Select files for conversion or just drag and drop them to the upload area

Information about CHM file format

Name CHM
Full name CHM - Microsoft Compiled HTML Help
File extension .chm
MIME type application/vnd.ms-htmlhelp
Developed by Microsoft
Type of format Document file format
Description 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.
Technical details Help 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. CHM files support the following features: data compression, built-in search engine, ability to merge multiple .chm help files, extended character support.
Associated programs Sumatra PDF, HTML Help Workshop
Wiki https://en.wikipedia.org/wiki/Microsoft_Compiled_HTML_Help