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A propriedade CSS font-kerning controla o o uso da informação de kerning, que é, o controle de como as letras serão espaçadas. A informação de kerning é armazenada na fonte, e se a fonte é well-kerned, essa caracteristica permite que o espaçamento entre caracteres seja muito parecido, independente dos caracteres.
font-kerning: auto; font-kerning: normal; font-kerning: none; /* Global values */ font-kerning: inherit; font-kerning: initial; font-kerning: unset;
| Initial value | auto |
|---|---|
| Aplica-se a | all elements. It also applies to ::first-letter and ::first-line. |
| Inherited | yes |
| Midia | visual |
| Computed value | as specified |
| Animation type | discrete |
| Canonical order | the unique non-ambiguous order defined by the formal grammar |
Syntax
Values
auto- This keyword defers to the browser regarding whether to use kerning. When the font size is small, font kerning may look strange and browsers will disable it. This is the default value.
normal- This keyword requires kerning to be applied.
none- This keyword prevents the browser from using the kerning information stored in the font.
Formal syntax
auto | normal | none
Examples
p {
font-kerning: none;
}
Specifications
| Specification | Status | Comment |
|---|---|---|
| CSS Fonts Module Level 3 The definition of 'font-kerning' in that specification. |
Candidata a Recomendação | Initial definition |
Browser Compatibility
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|---|
| Basic support | 32[1] | (Yes) | 34 (34)[2] | 10[3] | ? | 7 |
| Feature | Android | Edge | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | ? | (Yes) | 34.0 (34)[2] | ? | ? | 7 |
[1] Requires prefix -webkit-font-kerning. First version supporting this property is not known.
[2] Experimental implementation was available since Gecko 24. It was governed by the preference layout.css.font-features.enabled defaulting to true on Nightly and Aurora only.
[3] OpenType layout features might be supported using font-feature-settings property, however individual font-kerning property is not supported.
Kerning Demo
HTML Content
<div id="kern"></div> <div id="nokern"></div> <textarea id="input">AV T. ij</textarea>
CSS Content
#nokern, #kern {
font-size: 2rem;
font-family: serif;
}
#nokern {
font-kerning: none;
}
#kern {
font-kerning: normal;
}
JS Content
var input = document.getElementById('input'),
kern = document.getElementById('kern'),
nokern = document.getElementById('nokern');
input.addEventListener('keyup', function() {
kern.textContent = input.value; /* Update content */
nokern.textContent = input.value;
});
kern.textContent = input.value; /* Initialize content */
nokern.textContent = input.value;