Within the editor toolbar, a drop-down with font-sizing capabilities is available. This can be enabled or disabled with showFontSize.
When enabled, the default font-size values can be modified via optional fontSizeValues. fontSizeValues accepts a Map<String, String> consisting of a String title for the font size and a String value for the font size. Example:
fontSizeValues: const {'Small': '8', 'Medium': '24.5', 'Large': '46'}Font size can be cleared with a value of 0, for example:
fontSizeValues: const {'Small': '8', 'Medium': '24.5', 'Large': '46', 'Clear': '0'}