Searching [guitar chords] brings up some like this, e.g. https://www.all-guitar-chords.com/ https://www.all-guitar-chords.com/ which is quite similar but shows

Searching [guitar chords] brings up some like this, e.g. https://www.all-guitar-chords.com/ https://www.all-guitar-chords.com/ which is quite similar but shows fingerings too. For piano, https://www.pianochord.org/ https://www.pianochord.org/ has been around a while I think, but doesn't seem to play the chord so you can hear it.