Identify X windows

[kuon]

In sway I have:

for_window [shell="xwayland"] title_format "[XWayland] %title"

Which let me identify the windows that are using X protocol.

Is there a way to do this in niri or waybar?

[elcste]

I always just open xeyes and see if the eyes move 🤪

[stefonarch]

I've a shortcut to a script which transforms the cursor to a + sign on an xwayland window and prints info on click:
notify-send -a "Window Info" -i state-information "XWayland Properties" "$(xwininfo |tail -n +6)"