You can upload your custom favicon under Google (SEO) settings. By default your website comes with a branded Vsble browser icon/favicon hat you can replace.

A favicon, the small icon displayed in the browser tab next to your webpage title, plays a significant role in both SEO and branding. For SEO, it contributes to a better user experience by helping users easily identify and navigate to your site when multiple tabs are open. This improved user experience can indirectly influence your site's SEO ranking. For branding, a favicon serves as a visual cue that represents your brand across the web, enhancing brand recognition and consistency.

A favicon should have a square .png file format.