font-synthesis

A shorthand property that controls whether the browser can 'fake' bold, italic, or small-caps styles if the font doesn't provide them.

It is documented as part of the CSS Fonts specification.

/* Usage Example */
body {
  /* Disables all browser-faked font styles for better typography */
  font-synthesis: none;
}

/* Syntax */
font-synthesis: none;
font-synthesis: weight;
font-synthesis: style;
font-synthesis: small-caps;
font-synthesis: position;

/* Global values */
font-synthesis: inherit;
font-synthesis: initial;
font-synthesis: revert;
font-synthesis: revert-layer;
font-synthesis: unset;
Widely available Since 2022 95% global usage

This feature is well established and works across many devices and browser versions. It has been available across browsers since 2022.

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