Site identity flavicon

I generated a flavicon using an online generator. (https://www.favicon-generator.org/) I don't need it of course since I can create the flavicon under site identity. However the generator did give me a string of links & images that will create app icons and it says to paste them into the head of the html document. Can you tell me where I might put these. Examples are <link rel="apple-touch-icon" sizes="57x57" href="/apple-icon-57x57.png"> <link rel="apple-touch-icon" sizes="60x60" href="/apple-icon-60x60.png"> <link rel="apple-touch-icon" sizes="72x72" href="/apple-icon-72x72.png"> <link rel="apple-touch-icon" sizes="76x76" href="/apple-icon-76x76.png"> I assume I save all the .png files that are associated to the root directory of the WP site. Is this correct... or can you advise. Thanks