Files with chw extension can be most often found as files saved in Microsoft Help HTML general index file format. Used in Windows Help since 1997.

Detailed description

Software that open chw file

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CHW file extension - Microsoft Help HTML help general index

What is chw file? How to open chw files?

File type specification:

Various data file type icon Various data file type

File extension chw is related to Microsoft Help and used for files that contain help general index.

Microsoft Compiled HTML Help is a proprietary format for online help files, developed by Microsoft and first released in 1997 as a successor to the Microsoft WinHelp format.

It was first introduced with the release of Windows 98, and is still supported and distributed through Windows XP, Vista and Windows 7 platforms.

The default software associated to open chw file:

Microsoft Windows Help icon

Microsoft Corporation logoMicrosoft Windows Help  Microsoft Windows software

Company or developer:
Microsoft Corporation

Microsoft Windows Help is used to create help files for Microsoft Windows operating system and other Microsoft applications. Windows Help SDKs are different for every version of Windows it can be called Windows Help, Help and Support Center, Assistance Platform 1.0 Client - Windows Vista Help SDK, Microsoft Windows: HTML Help 1.4 etc.

Help how to open:

Most of index files are not meant to be opened directly and only serve for indexing purposes.

How to convert:

It seems that there exist no way how to convert .chw help general index files to other file formats. However, some help files management programs can be used to handle .chw files.

List of software applications associated to the .chw file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open chw file, edit chw file, convert chw file, view chw file, play chw file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting chw files.

Programs that can create chw file - Microsoft Help HTML help general index

Programs supporting the exension chw on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Microsoft Windows Help for create chw file action.

Microsoft Windows:

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