The font-synthesis-weight CSS property lets you specify whether or not the browser may synthesize the bold typeface when it is missing in a font family.
It is often convenient to use the shorthand property font-synthesis to control all typeface synthesis values.
Syntax
/* Keyword values */ font-synthesis-weight: auto; font-synthesis-weight: none; /* Global values */ font-synthesis-weight: inherit; font-synthesis-weight: initial; font-synthesis-weight: revert; font-synthesis-weight: revert-layer; font-synthesis-weight: unset;
Values
auto-
Indicates that the missing bold typeface may be synthesized by the browser if needed.
none-
Indicates that the synthesis of the missing bold typeface by the browser is not allowed.
Formal definition
| Initial value | auto |
|---|---|
| Applies to | all elements and text |
| Inherited | yes |
| Computed value | specified keyword |
| Animation type | discrete |
Formal syntax
auto | none
Examples
Disabling synthesis of bold typeface
This example shows turning off synthesis of the bold typeface by the browser in the Montserrat font.
HTML
<p class="english"> This is the default <strong>bold typeface</strong> and <em>oblique typeface</em>. </p> <p class="english no-syn"> The <strong>bold typeface</strong> is turned off here but not the <em>oblique typeface</em>. </p>
CSS
@import url("https://fonts.googleapis.com/css2?family=Montserrat&display=swap");
.english {
font-family: "Montserrat", sans-serif;
}
.no-syn {
font-synthesis-weight: none;
}