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The font-kerning
CSS property sets the use of the kerning information stored in a font.
/* Keyword values */ font-kerning: auto; font-kerning: normal; font-kerning: none; /* Global values */ font-kerning: inherit; font-kerning: initial; font-kerning: unset;
Kerning defines how letters are spaced. In well-kerned fonts, this feature makes character spacing more uniform and pleasant to read than it would otherwise be. In the image below, for instance, the examples on the left do not use kerning, while the ones on the right do:
Initial value | auto |
---|---|
Applies to | all elements. It also applies to ::first-letter and ::first-line . |
Inherited | yes |
Media | visual |
Computed value | as specified |
Animation type | discrete |
Canonical order | the unique non-ambiguous order defined by the formal grammar |
Syntax
The font-kerning
property is specified as one of the keyword values listed below.
Values
auto
- The browser determines whether font kerning should be used or not. For example, some browsers will disable kerning on small fonts, since applying it could harm the readability of text.
normal
- Font kerning information stored in the font must be applied.
none
- Font kerning information stored in the font is disabled.
Formal syntax
auto | normal | none
Example
HTML
<div id="kern"></div> <div id="nokern"></div> <textarea id="input">AV T. ij</textarea>
CSS
div { font-size: 2rem; font-family: serif; } #nokern { font-kerning: none; } #kern { font-kerning: normal; }
JavaScript
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;
Specifications
Specification | Status | Comment |
---|---|---|
CSS Fonts Module Level 3 The definition of 'font-kerning' in that specification. |
Candidate Recommendation | Initial definition. |
Browser Compatibility
Desktop | Mobile | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Basic support | Chrome
Full support
32
| Edge No support No | Firefox
Full support
32
| IE No support No | Opera ? | Safari Full support 7 | WebView Android ? | Chrome Android ? | Edge Mobile No support No | Firefox Android
Full support
32
| Opera Android ? | Safari iOS Full support 7 | Samsung Internet Android ? |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown
- User must explicitly enable this feature.
- User must explicitly enable this feature.
- Requires a vendor prefix or different name for use.
- Requires a vendor prefix or different name for use.