After having opened a Vegalite plot in a compatible window, without having written any interactivity code, there is basic interactivity in the form of hovering over a piece causing information to pop up. If you save this plot in some file format, this basic interactivity is not saved with it.
What is the most straightforward (and easiest) way to save the plot to a file with the basic interactivity intact?
Then, if possible, may it be opened with a mere browser?