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CSS3 Web Fonts


With CSS3, web designers are no longer forced to use only web-safe fonts

CSS3 Web Fonts - The @font-face Rule

Web fonts allow Web designers to use fonts that are not installed on the user's computer.

When you have found/bought the font you wish to use, just include the font file on your web server, and it will be automatically downloaded to the user when needed.

Your "own" fonts are defined within the CSS3 @font-face rule.


Browser Support

The numbers in the table specifies the first browser version that fully supports the property.

Property
@font-face 9.0 4.0 3.5 3.2 10.0


Different Font Formats

TrueType Fonts (TTF)

TrueType is a font standard developed in the late 1980s, by Apple and Microsoft. TrueType is the most common font format for both the Mac OS and Microsoft Windows operating systems.

OpenType Fonts (OTF)

OpenType is a format for scalable computer fonts. It was built on TrueType, and is a registered trademark of Microsoft. OpenType fonts are used commonly today on the major computer platforms.

The Web Open Font Format (WOFF)

WOFF is a font format for use in web pages. It was developed in 2009, and is now a W3C Recommendation. WOFF is essentially OpenType or TrueType with compression and additional metadata. The goal is to support font distribution from a server to a client over a network with bandwidth constraints.

SVG Fonts/Shapes

SVG fonts allow SVG to be used as glyphs when displaying text. The SVG 1.1 specification define a font module that allows the creation of fonts within an SVG document. You can also apply CSS to SVG documents, and the @font-face rule can be applied to text in SVG documents.

Embedded OpenType Fonts (EOT)

EOT fonts are a compact form of OpenType fonts designed by Microsoft for use as embedded fonts on web pages.


Browser Support for Font Formats

The numbers in the table specifies the first browser version that fully supports the font format.

Font format
TTF/OTF fonts 9.0* 4.0 3.5 3.1 10.0
WOFF fonts 9.0 5.0 3.6 5.1 11.1
SVG fonts Not supported 4.0 Not supported 3.2 9.0
EOT fonts 6.0 Not supported Not supported Not supported Not supported

*The font format only works when set to be "installable".


Using The Font You Want

In the CSS3 @font-face rule you must first define a name for the font (e.g. myFirstFont), and then point to the font file.

Note Tip: Always use lowercase letters for the font URL. Uppercase letters can give unexpected results in IE.

To use the font for an HTML element, refer to the name of the font (myFirstFont) through the font-family property:

Example

<style>
@font-face
{
font-family: myFirstFont;
src: url(sansation_light.woff);
}

div
{
font-family:myFirstFont;
}
</style>

Try it yourself »


Using Bold Text

You must add another @font-face rule containing descriptors for bold text:

Example

@font-face
{
font-family: myFirstFont;
src: url(sansation_bold.woff);
font-weight:bold;
}

Try it yourself »

The file "sansation_bold.woff" is another font file, that contains the bold characters for the Sansation font.

Browsers will use this whenever a piece of text with the font-family "myFirstFont" should render as bold.

This way you can have many @font-face rules for the same font.


CSS3 Font Descriptors

The following table lists all the font descriptors that can be defined inside the @font-face rule:

Descriptor Values Description
font-family name Required. Defines a name for the font
src URL Required. Defines the URL of the font file
font-stretch normal
condensed
ultra-condensed
extra-condensed
semi-condensed
expanded
semi-expanded
extra-expanded
ultra-expanded
Optional. Defines how the font should be stretched. Default is "normal"
font-style normal
italic
oblique
Optional. Defines how the font should be styled. Default is "normal"
font-weight normal
bold
100
200
300
400
500
600
700
800
900
Optional. Defines the boldness of the font. Default is "normal"
unicode-range unicode-range Optional. Defines the range of UNICODE characters the font supports. Default is "U+0-10FFFF"



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