The @font-face
CSS at-rule allows authors to specify online fonts to display text on their web pages. By allowing authors to provide their own fonts, @font-face
eliminates the need to depend on the limited number of fonts users have installed on their computers. 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. font-style
- A
font-style
value. font-weight
- A
font-weight
value. 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.
unicode-range
- The range of Unicode code points to be used from the font.
Formal syntax
@font-face { [ font-family: <family-name>; ] || [ src: [ <url> [ format(<string>#) ]? | <font-face-name> ]#; ] || [ unicode-range: <urange>#; ] || [ font-variant: <font-variant>; ] || [ font-feature-settings: normal | <feature-tag-value>#; ] || [ font-variation-settings: normal | [ <string> <number>] # || [ font-stretch: <font-stretch>; ] || [ font-weight: <weight>; ] || [ font-style: <style>; ] }where
<family-name> = <string> | <custom-ident>+
<feature-tag-value> = <string> [ <integer> | on | off ]?
Examples
This example simply specifies a downloadable font to use, applying it to the entire body of the document:
<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. |
Candidate 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
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|---|
Basic support | 4 | 12 | 3.5 | 4 | 10 | 3.1 |
WOFF | 6 | Yes | 3.5 | 9 | 11.1 | 5.1 |
WOFF 2 | 36 | 14 | 39 351 | No | 23 | 102 |
SVG fonts | No | No | No | No | No | Yes |
font-display | 60 | No | 58 | No | 47 | Yes |
font-family | 4 | 12 | 3.5 | 6 | 9 | 3.1 |
font-feature-settings | No | No | 343 | No | No | No |
font-style | 4 | ? | 3.5 | 4 | 10 | 3.1 |
font-weight | 4 | 12 | 3.5 | 4 | 10 | 3.1 |
src | 4 | 12 | 3.5 | 6 | 9 | 3.1 |
unicode-range | Yes | Yes | 36 | 9 | Yes | Yes |
Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | Yes | Yes | 12 | 4 | Yes | 10 | Yes |
WOFF | 4.4 | Yes | Yes | 4 | 10 | 11 | 5 |
WOFF 2 | 36 | 36 | 14 | 39 351 | No | 23 | 10 |
SVG fonts | No | No | No | No | No | No | Yes |
font-display | 60 | 60 | No | 58 | No | 47 | Yes |
font-family | 2.2 | ? | 12 | 4 | 10 | 12 | 3.1 |
font-feature-settings | No | No | No | 343 | No | No | No |
font-style | Yes | ? | ? | 4 | ? | 10 | Yes |
font-weight | Yes | Yes | 12 | 4 | Yes | 10 | Yes |
src | 2.2 | ? | 12 | 4 | 10 | 12 | 3.1 |
unicode-range | ? | ? | Yes | 36 | ? | ? | 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.