For visual identification of your Conversational Site, you can also insert a favicon, which is a small icon that represents a website, usually displayed in the browser tab next to the page title or in the bookmarks bar.
To do this, you need to add a Favicon image for the website. Click on the gear icon in Conversational Site, on the first tab Site Information, there will be a field for Website Favicon.
Simply click on Select, choose an image, or upload a new image.
As shown in the video below.