.PHR File

The phr file extension seems to be mainly related to Adobe RoboHelp, a help documents authoring tool for Microsoft Windows originally developed by Macromedia and now owned by Adobe.

The phr file stores list of phrases in plain text format.

Files with phr file extension can be usually encountered as phrase files from Adobe Robohelp help files authoring app.

How to open:

Except for the intended use in Robohelp, you can view and edit these files using text editor.

How to convert:

You can work (and thus convert) these files much like any other text file.