Keys generates and renders shortcuts to make any website keyboard navigable. Just press G and shortcuts will be rendered (gorgeously) throughout the page. It really stinks that I can't attach images because it's a really beautiful extension. It's available on Chrome and Safari.
Chrome: https://chrome.google.com/webstore/detail/keys/janfhenejaodaifcjjkddmlpjcnopjla
Safari: https://apps.apple.com/us/app/keys-for-safari/id1494642810?mt=12