font-synthesis-position CSS property
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The font-synthesis-position CSS property lets you specify whether or not a browser may synthesize the subscript and superscript "position" typefaces when they are missing in a font family, while using font-variant-position to set the positions.
The font-synthesis-position property has no effect when using the <sup> and <sub> elements.
It is often convenient to use the shorthand property font-synthesis to control all typeface synthesis values.
Syntax
/* Keyword values */
font-synthesis-position: auto;
font-synthesis-position: none;
/* Global values */
font-synthesis-position: inherit;
font-synthesis-position: initial;
font-synthesis-position: revert;
font-synthesis-position: revert-layer;
font-synthesis-position: unset;
Values
Formal definition
| Initial value | none |
|---|---|
| Applies to | all elements and text. It also applies to ::first-letter and ::first-line. |
| Inherited | yes |
| Computed value | as specified |
| Animation type | discrete |
Formal syntax
font-synthesis-position =
auto |
none
Examples
Disabling synthesis of position typeface
This example shows turning off synthesis of the superscript and subscript typefaces by the browser in the Montserrat font.
HTML
<p>
These are the default position <span class="super">superscript</span>,
position <span class="sub">subscript</span>, <strong>bold</strong> and
<em>oblique</em> typefaces.
</p>
<p class="no-syn">
The positions <span class="super">superscript</span> and
<span class="sub">subscript</span> typeface is turned off here but not the
<strong>bold</strong> and <em>oblique</em> typefaces (on browsers that support
<code>font-synthesis-position</code>).
</p>
CSS
@import "https://fonts.googleapis.com/css2?family=Montserrat&display=swap";
* {
font-family: "Montserrat", sans-serif;
}
.super {
font-variant-position: super;
}
.sub {
font-variant-position: sub;
}
.no-syn {
font-synthesis-position: none;
}
Result
Specifications
| Specification |
|---|
| CSS Fonts Module Level 4 # font-synthesis-position |
Browser compatibility
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font-synthesis-position
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auto
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none
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Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.