CSS FONT-SIZE-ADJUST

Specifies an aspect value for an element that will preserve the x-height of the first-choice font. If the aspect value is high, the font will be legible when it is set to a smaller size.

Example

h2 {font-size-adjust: 0.58}

Possible Values

Value	Description
none	Do not preserve the font’s x-height if the font is unavailable
number	Defines the aspect value ratio for the font The formula to use: font-size of first-choice font(font-size-adjust/aspect value of available font) = font-size to apply to available font Example: If 14px Verdana (aspect value of 0.58) was unavailable, but an available font had an aspect value of 0.46, the font-size of the substitute would be 14 (0.58/0.46) = 17.65px

Value

Description

none

Do not preserve the font’s x-height if the font is unavailable

number

Defines the aspect value ratio for the font

The formula to use:
font-size of first-choice font*(font-size-adjust/aspect value of available font) = font-size to apply to available font

Example:

If 14px Verdana (aspect value of 0.58) was unavailable, but an available font had an aspect value of 0.46, the font-size of the substitute would be 14 * (0.58/0.46) = 17.65px