CSS Web Fonts
The CSS @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 CSS @font-face rule.
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.
The Web Open Font Format (WOFF 2.0)
TrueType/OpenType font that provides better compression than WOFF 1.0.
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
9.0*
4.0
3.5
3.1
10.0
WOFF
9.0
5.0
3.6
5.1
11.1
WOFF2
14.0
36.0
39.0
10.0
26.0
SVG
Not supported
Not supported
Not supported
3.2
Not supported
EOT
6.0
Not supported
Not supported
Not supported
Not supported
*IE: The font format only works when set to be "installable".
Using The Font You Want
In the @font-face rule; first define a name for the font (e.g. myFirstFont) and then point to the font file.
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
@font-face
{
font-family: myFirstFont;
src: url(sansation_light.woff);
}
div
{
font-family: myFirstFont;
}
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.
Test Yourself With Exercises
Exercise:
Add a web font with the name "sansation" and the URL "sansation_light.woff".
<style>
{
font-family: ;
: ;
}
body {
font-family: sansation;
}
</style>
<body>
<h1>This is a heading</h1>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
</body>
Submit Answer »
Start the Exercise
CSS 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"
★
+1
Reference: https://www.w3schools.com/css/css3_fonts.asp