How to open CHW files
Did your computer fail to open a CHW file? We explain what CHW files are and recommend software that we know can open or convert your files.
What is a CHW file?
Files that contain the .chw file extension are normally associated with index files that are related to multiple associated CHM (compiled HTML help) file.
When a compiled HTML help file is created and the separate components (CHM files) are merged together, the CHW file is automatically created.
The CHW file contains the table of contents for the help file and the references to each CHM file that is listed within the help file table. Each time a new CHM file is added to the compiled help file list, the CHW is automatically updated.
The CHW file format is similar in nature to the GID file format.
Update info Upload example file
CHW file openers, viewers, etc.
These apps are known to open certain types of CHW files. Remember, different programs may use CHW files for different purposes, so you may need to try out a few of them to be able to open your specific file.
 | BitZipper | User submitted |
 | TimePassages | User submitted |
 | WinArc | User submitted |
Not sure exactly what type of file you are trying to open? Try our new File Analyzer. It is a free tool that can identify more than 11,000 different kinds of files - most likely yours too! It will help you find software that can handle your specific type of file. Download File Analyzer here.