In Text Editor the Size determines how big or small a font used in the document text will be. The following values are available: 8px, 9px, 10px, 11px, 12px, 14px, 16px, 18px, 20px, 22px, 24px, 26px, 28px, 36px, 48px, and 72px. Font sizes may also be defined in a descriptive manner, like Very small or Bigger.

To change a font size for a text fragment, open the Size menu by clicking the button on the toolbar. The font size drop-down list contains a number of sizes that you can use. To make the choice easier, the items of the list are displayed in a font size that they represent, giving you a preview of what the text will look like.

Font size drop-down menu in Text Editor

A font size can be applied to the whole document, a paragraph, or a text fragment of arbitrary length - even a single letter. Do note, however, that for aesthetic and readability reasons it is recommended not to combine too many different font sizes in one document.

Different font sizes used in Text Editor