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.

Example of font-kerning

font-kerning: auto;
font-kerning: normal;
font-kerning: none;

/* Global values */
font-kerning: inherit;
font-kerning: initial;
font-kerning: unset;

Initial valueauto
Aplica-se aall elements. It also applies to ::first-letter and ::first-line.
Computed valueas specified
Animation typediscrete



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.
This keyword requires kerning to be applied.
This keyword prevents the browser from using the kerning information stored in the font.

Formal syntax

auto | (en-US) normal | (en-US) none


p {
  font-kerning: none;


Specification Status Comment
CSS Fonts Module Level 3
The definition of 'font-kerning' in that specification.
Recomendação Initial definition

Browser Compatibility

Estamos convertendo nossos dados de compatibilidade para o formato JSON. Esta tabela de compatibilidade ainda usa o formato antigo, pois ainda não convertemos os dados que ela contém. Descubra como você pode ajudar! (en-US)

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;

See also