X-height

The x-height of a font is a critical typographic measurement that defines the height of lowercase letters, excluding any ascenders or descenders. It is measured from the baseline to the top of the lowercase ‘x’ (hence the name). This dimension plays a crucial role in determining the overall appearance and readability of the typeface. A larger x-height typically results in more legible text, particularly at smaller sizes, as it allows for more pronounced letterforms. Conversely, a smaller x-height can lend a more elegant and refined look to the text. The x-height impacts the perceived size of the typeface and its visual harmony with other design elements.