Change ‘Site Title’ Font & Size
If you’re starting to build your website on Squarespace 7.1, it might be challenging to find where to change the font of your Site Title.
You can find it by going to Design > Site Styles > Fonts > Assign Styles > Site Title.
From there, you change the style of the font from Heading to Custom. If you’d like to use a separate font for only the site title, select Custom from the Style dropdown and you can change the font family, weight, style (normal or italic), letter spacing, text transform (uppercase, lowercase, capital case), and line height from there.
If you want to change the size of the Site Title, you can either choose a heading size from the size dropdown or select Custom to manually change the size.