How to open HHP files
Did your computer fail to open a HHP file? We explain what HHP files are and recommend software that we know can open or convert your files.
What is a HHP file?
The HHP file extension indicates to your device which app can open the file. However, different programs may use the HHP file type for different types of data.
We are aware of 1 different use of the HHP extension, which you can read more about below.
Microsoft HTML Help Project
Through our analysis of HHP files, we know that one use of the format is Microsoft HTML Help Project. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.
Software that will open, convert or fix HHP files
These apps are known to open certain types of HHP files. Since many different programs may use HHP files for different purposes, you may need to try a few of the apps to open your specific HHP file.