I wanted to use it as well on windows the other day.
Because I wanted to migrate a mssql database to PostgreSQL. However AFAIR there were no builds I could find and from what I read in the issues it is quite discouraging, a pity
Doesn't seem to work for me with Chrome on macos - Not sure what's the deal is - It shows me 4 empty rectangles and expects me to do something - potentially in the keyboard input field. However if I press for example CMD + P obviously it tries to print - So it doesn't catch the shortcuts.