Convert WAV to PNG

It seems not possible to convert WAVE Audio Files directly to Portable Network Graphics (.wav to .png conversion), since both file types are radically different in their nature and function.

You will, most likely, not find any media editing tool or (online) converter, which would allow you to transform WAV audio files to PNG graphics format.

Simply put, it is impossible to convert WAV to PNG directly.
Thus, there is no so-called wav to png converter or a free online wav to png converter to be found.