Adding a Favicon to your Squarespace website
A Favicon is 'an icon associated with a particular website, typically displayed in the address bar of a browser accessing the site or next to the site name in a user's list of bookmarks'. It's essentially a mini logo for your site - browsers like Chrome will also display your site's favicon on open tabs.
It still amazes us to see so many default favicons on the Squarespace website's we come across... If your site doesn't have one, you'll automatically get the boring and ugly cube you see above.
Standard favicon dimensions are anywhere between 100px by 100px to 300px by 300px and can't exceed 100kb. We recommend a transparent .png file.
To set yours head to:
Design > Logo & Title > Browser Icon (Favicon)