FontFace: ascentOverride property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Note: This feature is available in Web Workers.

The ascentOverride property of the FontFace interface returns and sets the ascent metric for the font, the height above the baseline that CSS uses to lay out line boxes in an inline formatting context.

This property is equivalent to the ascent-override descriptor of @font-face.

Value

A string. The possible values are normal, indicating that the metric used should be obtained from the font file, or a percentage.

This property accepts the same values as the ascent-override descriptor.

Examples

js
let fontFace = new FontFace(
  "Roboto",
  "url(https://fonts.example.com/roboto.woff2)",
  { ascentOverride: "90%" },
);
console.log(fontFace.ascentOverride); // 90%
fontFace.ascentOverride = "normal";
console.log(fontFace.ascentOverride); // 'normal'

Specifications

Specification
CSS Font Loading Module Level 3
# dom-fontfacedescriptors-ascentoverride

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
ascentOverride

Legend

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Full support
Full support
No support
No support