The hhk file extension is associated with Microsoft Help’s HTML help index files. These files are part of the help system included with Microsoft Windows to allow developers to create help documents. Not typically accessed directly by users. No known way to directly convert hhk files.
Most HHK files are considered system files. They have been identified on both desktop and mobile devices. These files have a “Low” popularity rating, meaning they are not common.
HHK files are supported on devices using Windows. They fall into the broader system files category, which has 323 file types. Although primarily managed by Microsoft’s HTML Help Workshop, 1 other program can handle hhk files.
The hhk extension relates to Microsoft Help, enabling web-based help interfaces for programs. It indexes files accessible through Microsoft HTML Help. The default software to open hhk files is Microsoft HTML Help Workshop.
Learn about the HHK file extension and associated software to open these files. Explore known issues and free online HHK tools needing no installation. These allow viewing, editing, converting, merging, splitting, and comparing HHK files.
Microsoft HTML Help Workshop
Adobe RoboHelp
FAR HTML