The @font-face CSS at-rule specifies a custom font with which to display text; the font can be loaded from either a remote server or the user's own computer. If the local() function is provided, specifying a font name to look for on the user's computer, and the user agent finds a match, that local font is used. Otherwise, the font resource specified using the url() function is downloaded and used.

By allowing authors to provide their own fonts, @font-face makes it possible to design content without being limited to the so-called "safe" fonts (that is, the fonts which are so common that they're considered to be universally available). The ability to specify the name of a locally-installed font to look for and use makes it possible to customize the font beyond the basics while making it possible to do so without relying on an Internet connection.

It's common to use both url() and local() together, so that the user's installed copy of the font is used if available, falling back to downloading a copy of the font if it's not found on the user's device.

The @font-face at-rule may be used not only at the top level of a CSS, but also inside any CSS conditional-group at-rule.

@font-face {
  font-family: "Open Sans";
  src: url("/fonts/OpenSans-Regular-webfont.woff2") format("woff2"),
       url("/fonts/OpenSans-Regular-webfont.woff") format("woff");
}

Syntax

Descriptors

font-display
Determines how a font face is displayed based on whether and when it is downloaded and ready to use.
font-family
Specifies a name that will be used as the font face value for font properties.
font-stretch
A font-stretch value. Since Firefox 61 (and in other modern browsers) this also accepts two values to specify a range that is supported by a font-face, for example font-stretch: 50% 200%;
font-style
A font-style value. Since Firefox 61 (and in other modern browsers) this also accepts two values to specify a range that is supported by a font-face, for example font-style: oblique 20deg 50deg;
font-weight
A font-weight value. Since Firefox 61 (and in other modern browsers) this also accepts two values to specify a range that is supported by a font-face, for example font-weight: 100 400;
font-variant
A font-variant value.
font-feature-settings
Allows control over advanced typographic features in OpenType fonts.
font-variation-settings
Allows low-level control over OpenType or TrueType font variations, by specifying the four letter axis names of the features to vary, along with their variation values.
src

Specifies the resource containing the font data. This can be a URL to a remote font file location or the name of a font on the user's computer.

To provide the browser with a hint as to what format a font resource is — so it can select a suitable one — it is possible to include a format type inside a format() function:

src: url(ideal-sans-serif.woff) format("woff"),
     url(basic-sans-serif.ttf) format("opentype");

The available types are: "woff", "woff2", "truetype", "opentype", "embedded-opentype", and "svg".

unicode-range
The range of Unicode code points to be used from the font.

Formal syntax

@font-face {
  [ font-family: <family-name>; ] ||
  [ src: <src>; ] ||
  [ unicode-range: <unicode-range>; ] ||
  [ font-variant: <font-variant>; ] ||
  [ font-feature-settings: <font-feature-settings>; ] ||
  [ font-variation-settings: <font-variation-settings>; ] ||
  [ font-stretch: <font-stretch>; ] ||
  [ font-weight: <font-weight>; ] ||
  [ font-style: <font-style>; ]
}

where
<family-name> = <string> | <custom-ident>+

Examples

This example simply specifies a downloadable font to use, applying it to the entire body of the document:

View the live example

<html>
<head>
  <title>Web Font Sample</title>
  <style type="text/css" media="screen, print">
    @font-face {
      font-family: "Bitstream Vera Serif Bold";
      src: url("https://mdn.mozillademos.org/files/2468/VeraSeBd.ttf");
    }
    
    body { font-family: "Bitstream Vera Serif Bold", serif }
  </style>
</head>
<body>
  This is Bitstream Vera Serif Bold.
</body>
</html>

In this example, the user's local copy of "Helvetica Neue Bold" is used; if the user does not have that font installed (two different names are tried), then the downloadable font named "MgOpenModernaBold.ttf" is used instead:

@font-face {
  font-family: MyHelvetica;
  src: local("Helvetica Neue Bold"),
       local("HelveticaNeue-Bold"),
       url(MgOpenModernaBold.ttf);
  font-weight: bold;
}

Notes

  • Web fonts are subject to the same domain restriction (font files must be on the same domain as the page using them), unless HTTP access controls are used to relax this restriction.
  • Because there are no defined MIME types for TrueType, OpenType, and Web Open File Format (WOFF) fonts, the MIME type of the file specified is not considered.
  • @font-face cannot be declared within a CSS selector. For example, the following will not work:
    .className { 
      @font-face { 
        font-family: MyHelvetica; 
        src: local("Helvetica Neue Bold"),
             local("HelveticaNeue-Bold"),
             url(MgOpenModernaBold.ttf);
        font-weight: bold; 
      } 
    }

Specifications

Specification Status Comment
WOFF File Format 2.0
The definition of 'WOFF2 font format' in that specification.
Proposed Recommendation Font format specification with new compression algorithm
WOFF File Format 1.0
The definition of 'WOFF font format' in that specification.
Recommendation Font format specification
CSS Fonts Module Level 3
The definition of '@font-face' in that specification.
Candidate Recommendation Initial definition

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support4123.54103.1
WOFF6 Yes3.5911.15.1
WOFF 23614

39

351

No23102
SVG fonts No No No No No Yes
font-display60 No58 No47 Yes
font-family4123.5693.1
font-feature-settings No No

343

15 -moz- 4

No No No
font-variation-settings62 No605 No49 No
font-style4 ?3.54103.1
font-weight4123.54103.1
src4123.5693.1
unicode-range Yes Yes369 Yes Yes
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidOpera AndroidiOS SafariSamsung Internet
Basic support Yes Yes12410 Yes Yes
WOFF4.4 Yes Yes4115 Yes
WOFF 2363614

39

351

23103.0
SVG fonts No No No No No Yes No
font-display6060 No5847 Yes No
font-family2.2 ?124123.1 Yes
font-feature-settings No No No

343

15 -moz- 4

No No No
font-variation-settings6262 No605 Yes No No
font-style Yes ? ?410 Yes Yes
font-weight Yes Yes12410 Yes Yes
src2.2 ?124123.1 Yes
unicode-range ? ? Yes36 ? Yes Yes

1. From version 35: this feature is behind the gfx.downloadable_fonts.woff2.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.

2. Supported only on macOS 10.12 (Sierra) and later.

3. The ISO/IEC CD 14496-22 3rd edition suggests using the ssty feature to provide glyph variants more suitable for use in scripts (for example primes used as superscripts). Starting with Firefox 29, this is done automatically by the MathML rendering engine. The ISO/IEC CD 14496-22 3rd edition also suggests applying the dtls feature to letters when placing mathematical accents to get dotless forms (for example dotless i, j with a hat). Starting with Firefox 35, this is done automatically by the MathML rendering engine. You can override the default values determined by the MathML rendering engine with CSS.

4. From Firefox 4 to Firefox 14 (inclusive), Firefox supported an older, slightly different syntax. See OpenType Font Feature support in Firefox 4.

5. From version 60: this feature is behind the layout.css.font-variations.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.

See also