I tried the demo it works excellent
PBR textures generator demo
A downloadable tool for Windows
An easy and fast tool to generate PBR maps or textures from a given color texture of your choice.
This is a free fully-functional Demo version of the upcoming commercial (paid) tool which will be released within the next few months.
You can make comments, ask questions or give feedback trough the UE4's official forums:
(clic here) or directly through this itch.io project's page comments.
User's manual at UE4's official forums too (but, probably, you won't need it): clic here
Simply, download it for free, decompress the .zip file and execute the .exe file!