https://usersnap.com/ https://usersnap.com/ could be an option. - doesn't have comments on HTML elements but does allow users/stakeholders to draw on the screen

https://usersnap.com/ https://usersnap.com/ could be an option. - doesn't have comments on HTML elements but does allow users/stakeholders to draw on the screen and submit reports of what they've drawn e.g. if something looks wrong.