font-feature-settings

The font-feature-settings CSS property controls advanced typographic features in OpenType fonts.

Try it

Syntax

css
/* Use the default settings */
font-feature-settings: normal;

/* Set values for OpenType feature tags */
font-feature-settings: "smcp";
font-feature-settings: "smcp" on;
font-feature-settings: "swsh" 2;
font-feature-settings:
  "smcp",
  "swsh" 2;

/* Global values */
font-feature-settings: inherit;
font-feature-settings: initial;
font-feature-settings: revert;
font-feature-settings: revert-layer;
font-feature-settings: unset;

Whenever possible, Web authors should instead use the font-variant shorthand property or an associated longhand property such as font-variant-ligatures, font-variant-caps, font-variant-east-asian, font-variant-alternates, font-variant-numeric or font-variant-position.

These lead to more effective, predictable, understandable results than font-feature-settings, which is a low-level feature designed to handle special cases where no other way exists to enable or access an OpenType font feature. In particular, font-feature-settings shouldn't be used to enable small caps.

Values

This property is specified as either the keyword normal or as a comma-separated list of <feature-tag-value> values. When rendering text, the list of OpenType <feature-tag-value> values are passed to the text layout engine to enable or disable font features.

normal

Indicates that text is laid out using default font settings. This is the default value.

<feature-tag-value>

Represents a space-separated tuple consisting of a tag name and an optional value.

The tag name is always a <string> of four ASCII characters. If the tag name has more or fewer characters or if it contains characters outside the U+20 – U+7E code point range, the descriptor is invalid.

The optional value can be a positive integer or the keyword on or off. The keywords on and off are synonyms for the values 1 and 0, respectively. If no value is set, the default is 1. For non-boolean OpenType features (e.g., stylistic alternates), the value implies a particular glyph to be selected; for boolean features, the value turns the feature on or off.

Formal definition

Initial valuenormal
Applies toall elements and text. It also applies to ::first-letter and ::first-line.
Inheritedyes
Computed valueas specified
Animation typediscrete

Formal syntax

font-feature-settings = 
  normal                |
  <feature-tag-value>#  

<feature-tag-value> = 
  <opentype-tag> [ <integer [0,∞]> | on | off ]?  

<opentype-tag> = 
  <string>

Examples

Enabling various font features

css
/* use small-cap alternate glyphs */
.smallcaps {
  font-feature-settings: "smcp" on;
}

/* convert both upper and lowercase to small caps (affects punctuation also) */
.allsmallcaps {
  font-feature-settings: "c2sc", "smcp";
}

/* use zeros with a slash through them to differentiate from "O" */
.nicezero {
  font-feature-settings: "zero";
}

/* enable historical forms */
.hist {
  font-feature-settings: "hist";
}

/* disable common ligatures, usually on by default */
.noligs {
  font-feature-settings: "liga" 0;
}

/* enable tabular (monospaced) figures */
td.tabular {
  font-feature-settings: "tnum";
}

/* enable automatic fractions */
.fractions {
  font-feature-settings: "frac";
}

/* use the second available swash character */
.swash {
  font-feature-settings: "swsh" 2;
}

/* enable stylistic set 7 */
.fancystyle {
  font-family: Gabriola;
  font-feature-settings: "ss07";
}

Specifications

Specification
CSS Fonts Module Level 4
# font-feature-settings-prop

Browser compatibility

BCD tables only load in the browser

See also